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• Messenger Thinks My Ip is Invalid

  - by Umut Benzer

  Hello. I am using Windows Live Messenger 2009 on Windows 7. I am using a 3G modem (ZTE Propietary USB Modem) I connect to the Internet using a software my ISP provided me. In last three days, my Messenger started to disconnect. Here is what I observed and tried to do: 1- I can browse web, can do FTP transfer etc. and obiviously have a valid IP. 2- I can sign in to Messenger (appear offline) but when I change my status to anything other then appear offline, Messenger says my connection to service has been lost. (However, it exists.) 3- When I run, MSN Connection Troubleshooter, it says my IP is invalid. When I click repair, it says repaired and just after that, I run the troubleshooter again, and it says my IP is invalid again. (However, it is valid and I am browsing the net.) 4- If I connect the Internet through eterhet or wireless there is no problem at all. 5- I re-installed Messenger (deleting all settings manually through registry and folders), re-installed all drivers and software related to USB 3G Modem. It doesn't work. And then, I took a full backup then formatted entire computer, installed a fresh windows 7, after 5 minutes, the same problem occured. What do you recommend? What can I do? Addition As seen on screenshot, it says Server IPv4 adress is 0.0.0.0 It seems like a problem, I don't know if it is. If it is, how can I solve it? Here is what I get, when I netstat. PPP adapter TTNET internet: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 217.174.39.122 Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : 0.0.0.0 Wireless LAN adapter Wireless Network Connection 2: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Wireless LAN adapter Wireless Network Connection: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : ege.edu.tr Ethernet adapter Local Area Connection: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 16: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 13: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter 6TO4 Adapter: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 9: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 11: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 12: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 14: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 17: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 25: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 20: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 18: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 19: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 22: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 21: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 15: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 23: Connection-specific DNS Suffix . : IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e74:2448:3909:2a2c:eb7b Link-local IPv6 Address . . . . . : fe80::2448:3909:2a2c:eb7b%30 Default Gateway . . . . . . . . . : Tunnel adapter Local Area Connection* 24: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter isatap.{CFFCFEDB-6B53-42E0-B091-548B9ADE9C9D}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 26: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 27: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 29: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 31: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 28: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter Local Area Connection* 32: Connection-specific DNS Suffix . : IPv6 Address. . . . . . . . . . . : 2002:d9ae:277a::d9ae:277a Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301 Tunnel adapter Local Area Connection* 30: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter isatap.{157CF713-B3AC-4701-87A9-14C23CA60AAB}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter isatap.ege.edu.tr: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Tunnel adapter isatap.{0D3CD01B-0993-4B37-89B8-12557ECF484D}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . :

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• Backing Up vs. Redundancy

  - by TK Kocheran

  I'm currently in stage 2 of 3 of building my home workstation. What this means is that my RAID-0 array of solid state disks will be backed up nightly to a RAID-5 or RAID-6 array of traditional spinning hard disks. However, it recently dawned on me that redundancy is not backup. The main reason for setting up a RAID array with redundancy was to protect myself in the event of a drive failure to serve as an effective backup solution. Wait. What if a bolt of lightning finds a way to travel into my house, through my surge-protector, into my power supply and physically destroys all of my hard disks and SSDs? Well, in that case, I guess I'd be fine because I generally keep most important files (music, pictures, videos) stored in multiple places like on my laptop, my wife's laptop, and an encrypted USB hard drive. Wait. What if a giant hedgehog meteor attacks my house from space traveling at mach 3 and all machines and hard disks are blown to smithereens. Well, I guess I could find a way to do ridiculously slow and cumbersome rsyncs or backups to Amazon's Glacier. Wait. What if there's a nuclear apocalypse... and at this point I start laughing hysterically. At what point does backing up become irrelevant? I completely understand situation one (mechanical drive failure), situation two (workstation compromised or destroyed somehow), possibly even situation three (all machines and disks destroyed), but situation four? There's no questioning the need for backups. None. However, there are three questions I'd really like addressed: To what level should one backup? I definitely understand the merits of physical disk redundancy. I also believe in keeping important files on multiple machines and thinning out the possibility of losing all of my files. Online backups make sense, but they beg the following question. What should I be backing up remotely and how often? It's no problem storage-wise to back up important files (music, pictures, videos) and even configuration and temporal data for all of the machines in my network (all Linux based)... albeit locally. Transferring to the cloud is another story. Worst-case scenario, if I lost all of my configuration for my individual computers, the reality is that I probably lost the machines too. The cloud is a long way away from here; I can run backups over CAT-6 here and see 100MB/s easily, but I'm afraid that I'm only going to see 2MB/s at best when transferring up to the cloud.

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• Unable to add IPv6 address to sendmail access list

  - by David M. Syzdek

  I am running Sendmail 8.14.4 on Slackware 13.37. I have the following in my /etc/mail/access file and it works without any errors: Connect:127 OK Connect:10.0.1 RELAY # Net: office Connect:50.116.6.8 RELAY # Host: glider Connect:96.126.127.87 RELAY # Host: kite The above configuration also allows me to send an e-mail via IPv6 to a local user on the mail server. However, it does not allow my office to relay via IPv6. I have tried two ways of adding IPv6 networks to my access file. Method 1: Connect:127 OK Connect:10.0.1 RELAY # Net: office Connect:IPv6:2001:470:b:84a RELAY # Net: office Connect:50.116.6.8 RELAY # Host: glider Connect:96.126.127.87 RELAY # Host: kite Method 2: Connect:127 OK Connect:10.0.1 RELAY # Net: office Connect:[IPv6:2001:470:b:84a] RELAY # Net: office Connect:50.116.6.8 RELAY # Host: glider Connect:96.126.127.87 RELAY # Host: kite However whenever I try using either method 1 or 2, I am unable to relay e-mail messages through the host. /var/log/maillog entry: May 31 11:57:15 freshsalmon sm-mta[25500]: ruleset=check_relay, arg1=[IPv6:2001:470:b:84a:223:6cff:fe80:35dc], arg2=IPv6:2001:470:b:84a:223:6cff:fe80:35dc, relay=[IPv6:2001:470:b:84a:223:6cff:fe80:35dc], reject=553 5.3.0 RELAY # Net:office Test session from telnet: syzdek@blackenhawk$ telnet -6 freshsalmon.office.example.com 25 Trying 2001:470:b:84a::69... Connected to freshsalmon.office.bindlebinaries.com. Escape character is '^]'. 220 office.example.com ESMTP Sendmail 8.14.4/8.14.4; Thu, 31 May 2012 11:57:15 -0800 HELO blackenhawk.office.example.com 250 office.example.com Hello [IPv6:2001:470:b:84a:223:6cff:fe80:35dc], pleased to meet you MAIL FROM:[email protected] 553 5.3.0 RELAY # Net:office What is the correct way to add an IPv6 address/network to the access file in sendmail? Update: Apparently my access file was not working regardless. Removing the comments at the end of the line seems to have fixed the problem. Here is the lines which worked: Connect:127 OK Connect:IPv6:::1 OK # Net: office Connect:10.0.1 RELAY Connect:IPv6:2001:470:b:84a RELAY # Host: glider Connect:50.116.6.8 RELAY Connect:IPv6:2600:3c01::f03c:91ff:fedf:381a RELAY # Host: kite Connect:96.126.127.87 RELAY Connect:IPv6:2600:3c00::f03c:91ff:fedf:52a4 RELAY

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• Apache and MySQL taking all the memory? Maximum connections?

  - by lpfavreau

  I've a had one of our servers going down (network wise) but keeping its uptime (so looks the server is not losing its power) recently. I've asked my hosting company to investigate and I've been told, after investigation, that Apache and MySQL were at all time using 80% of the memory and peaking at 95% and that I might be needing to add some more RAM to the server. One of their justifications to adding more RAM was that I was using the default max connections setting (125 for MySQL and 150 for Apache) and that for handling those 150 simultaneous connections, I would need at least 3Gb of memory instead of the 1Gb I have at the moment. Now, I understand that tweaking the max connections might be better than me leaving the default setting although I didn't feel it was a concern at the moment, having had servers with the same configuration handle more traffic than the current 1 or 2 visitors before the lunch, telling myself I'd tweak it depending on the visits pattern later. I've also always known Apache was more memory hungry under default settings than its competitor such as nginx and lighttpd. Nonetheless, looking at the stats of my machine, I'm trying to see how my hosting company got those numbers. I'm getting: # free -m total used free shared buffers cached Mem: 1000 944 56 0 148 725 -/+ buffers/cache: 71 929 Swap: 1953 0 1953 Which I guess means that yes, the server is reserving around 95% of its memory at the moment but I also thought it meant that only 71 out of the 1000 total were really used by the applications at the moment looking a the buffers/cache row. Also I don't see any swapping: # vmstat 60 procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 0 0 0 57612 151704 742596 0 0 1 1 3 11 0 0 100 0 0 0 0 57604 151704 742596 0 0 0 1 1 24 0 0 100 0 0 0 0 57604 151704 742596 0 0 0 2 1 18 0 0 100 0 0 0 0 57604 151704 742596 0 0 0 0 1 13 0 0 100 0 And finally, while requesting a page: top - 08:33:19 up 3 days, 13:11, 2 users, load average: 0.06, 0.02, 0.00 Tasks: 81 total, 1 running, 80 sleeping, 0 stopped, 0 zombie Cpu(s): 1.3%us, 0.3%sy, 0.0%ni, 98.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1024616k total, 976744k used, 47872k free, 151716k buffers Swap: 2000052k total, 0k used, 2000052k free, 742596k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 24914 www-data 20 0 26296 8640 3724 S 2 0.8 0:00.06 apache2 23785 mysql 20 0 125m 18m 5268 S 1 1.9 0:04.54 mysqld 24491 www-data 20 0 25828 7488 3180 S 1 0.7 0:00.02 apache2 1 root 20 0 2844 1688 544 S 0 0.2 0:01.30 init ... So, I'd like to know, experts of serverfault: Do I really need more RAM at the moment? How do they calculate that for 150 simultaneous connections I'd need 3Gb? Thanks for your help!

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• Force Finder to log in as Guest to a SMB share

  - by slhck

  I have a QNAP NAS that offers a few SMB shares. As I'm in a trusted environment, my shares are accessible as guest rather than with a combination of username and password. Problem Now, when I click the name of the device in Finder's sidebar, I get the black "Connection failed" bar, with the option "Connect as...". When I click that, I receive: I can however press ? + K and enter the server's name manually, which gets me to this window: Here, I have to select "guest". Now, I can select one of the shares to connect to, and I'm finally connected to the server. If I select it in the sidebar, I get a list of all shares available, because I'm connected as "guest", obviously: What I need Well, as soon as I unmount all shares, I have to go through the same procedure of manually logging in as "guest" again, which I find quite annoying. Is there any way I could get Finder (or the underlying SMB client) to know which credentials to use? Or should I look for the solution rather on the server side? (I know that other SMB shares seem to work fine in my network) Diagnostics The only thing I can get out of Console.app is: 5/15/11 7:36:40 PM /System/Library/CoreServices/Finder.app/Contents/MacOS/Finder[200] SharePointBrowser::handleOpenCallBack returned 64 This message occurs when I click the name of the SMB server in the Finder sidebar. Here's the output of `smbclient -L meredith -U guest -d=2 charon:~ werner$ smbclient -L meredith -U guest -d=2 added interface ip=192.168.100.11 bcast=192.168.100.255 nmask=255.255.255.0 tdb(unnamed): tdb_open_ex: could not open file /private/var/samba/gencache.tdb: Permission denied Got a positive name query response from 192.168.100.100 ( 192.168.100.100 ) Password: Domain=[MEREDITH] OS=[Unix] Server=[Samba 3.5.2] Sharename Type Comment --------- ---- ------- music Disk movies Disk photos Disk software Disk archive Disk backups Disk IPC$ IPC IPC Service (NAS Server) Got a positive name query response from 192.168.100.100 ( 192.168.100.100 ) Domain=[MEREDITH] OS=[Unix] Server=[Samba 3.5.2] Server Comment --------- ------- Workgroup Master --------- ------- WORKGROUP MEREDITH Also, things I've tried: There is no relevant entry in the Keychain (but why would it, I'm only connecting as guest) Connecting with user name "Guest" and empty password logs me in but still after ejecting the last share, I get the same "Connection failed" error as before. The appropriate entry is made in the Keychain but obviously has no effect.

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• Vagrant reporting VirtualBox guest additions out of date

  - by DTest

  Fairly new to Vagrant, so bear with me if I don't understand the process. I downloaded a CentOS box off http://www.vagrantbox.es/ Started it up running VirtualBox 4.2.4 and got this message: [default] The guest additions on this VM do not match the install version of VirtualBox! This may cause things such as forwarded ports, shared folders, and more to not work properly. If any of those things fail on this machine, please update the guest additions and repackage the box. Guest Additions Version: 4.0.8 VirtualBox Version: 4.2.4 So I used the vbguest plugin to update the guest additions, then repackaged the box as suggested. Having replaced the old box and loading it up I get the same message about guest additions being outdated, but vbguest reports that they are up to date (the automatic vbguest update is disabled in my Vagrantfile): Vagrant::Config.run do |config| config.vm.box = "centos56_64" config.vbguest.auto_update = false config.vbguest.no_remote = true end And the commands: dtest$ vagrant up [default] Importing base box 'centos56_64'... [default] The guest additions on this VM do not match the install version of VirtualBox! This may cause things such as forwarded ports, shared folders, and more to not work properly. If any of those things fail on this machine, please update the guest additions and repackage the box. Guest Additions Version: 4.0.8 VirtualBox Version: 4.2.4 [default] Matching MAC address for NAT networking... [default] Clearing any previously set forwarded ports... [default] Forwarding ports... [default] -- 22 => 2222 (adapter 1) [default] Creating shared folders metadata... [default] Clearing any previously set network interfaces... [default] Booting VM... [default] Waiting for VM to boot. This can take a few minutes. [default] VM booted and ready for use! [default] Mounting shared folders... [default] -- v-root: /vagrant dtest$ vagrant vbguest --no-install [default] Detected Virtualbox Guest Additions 4.2.4 --- OK. [default] Virtualbox Guest Additions on host: 4.2.4 - guest's version is 4.2.4 Since they appear to be updated after an install, I could ignore the message. But is it possible to get rid of it?

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• Active Directory Partition Error

  - by BLAKE

  Right now my active directory is failing a dcdiag test. I can find no info online about this error. When I run dcdiag /test:crossrefvalidation, I get the output: .... Doing primary tests Testing server: Default-First-Site-Name\ad01 Running partition tests on : ForestDnsZones Starting test: CrossRefValidation ......................... ForestDnsZones passed test CrossRefValidation Running partition tests on : DomainDnsZones Starting test: CrossRefValidation ......................... DomainDnsZones passed test CrossRefValidation Running partition tests on : Schema Starting test: CrossRefValidation ......................... Schema passed test CrossRefValidation Running partition tests on : Configuration Starting test: CrossRefValidation ......................... Configuration passed test CrossRefValidation Running partition tests on : mydomain Starting test: CrossRefValidation ......................... mydomain passed test CrossRefValidation Running partition tests on : t Starting test: CrossRefValidation This cross-ref has a non-standard dNSRoot attribute. Cross-ref DN: CN=a3a24d3a-4782-460b-9148-86ac2d86b9ae,CN=Partitions,CN=Configuration, DC=mydomain,DC=com nCName attribute (Partition name): DC=t Bad dNSRoot attribute: dc01.mydomain.com Check with your network administrator to make sure this dNSRoot attribute is correct, and if not please change the attribute to the value below. dNSRoot should be: t It appears this partition (DC=t) failed to get completely created. This cross-ref (CN=a3a24d3a-4782-460b-9148-86ac2d86b9ae,CN=Partitions,CN=Configurat ion,DC=mydomain,DC=com) is dead and should be removed from the Active Directory. ......................... t failed test CrossRefValidation .... I used LDP from the windows support tools. I searched for the dnsRoot attribute in "cn=partitions,cn=configuration,dc=mydomain,dc=com", with the filter "(&(objectcategory=crossref)(systemFlags:1.2.840.113556.1.4.803:=5))" I got the result: ***Searching... ldap_search_s(ld, "cn=partitions,CN=Configuration,DC=mydomain,DC=com", 1, "(& (objectcategory=crossref)(systemFlags:1.2.840.113556.1.4.803:=5))", attrList, 0, &msg) Result <0>: (null) Matched DNs: Getting 3 entries: >> Dn: CN=65502be3-fc90-442a-83d8-4b3b91e82439,CN=Partitions,CN=Configuration,DC=mydomain,DC=com 1> dnsRoot: ForestDnsZones.mydomain.com; >> Dn: CN=a3a24d3a-4782-460b-9148-86ac2d86b9ae,CN=Partitions,CN=Configuration,DC=mydomain,DC=com 1> dnsRoot: ad01.mydomain.com; >> Dn: CN=f0ef5771-6225-4984-acd9-c08f582eb4e2,CN=Partitions,CN=Configuration,DC=mydomain,DC=com 1> dnsRoot: DomainDnsZones.mydomain.com; It looks like the bad partition has the name of my first domain controller 'ad01.mydomain.com'. I have googled for a while and have not been able to find any help or documentation about application partitions in Active Directory. Does anyone have any advice on how to cleanup this partition (or what the partition is for)? Does anyone know the repercussions for deleting this partition?

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• Is real-time or synchronous replication possible over WAN link?

  - by johnnyb10

  The company I work for is looking to implement truly real-time file replication with file locking over a WAN link that spans over 2000 miles. We currently have a 16-drive SAN setup in our east coast office. We also have an office out in Colorado that will have the same exact SAN setup. The idea is to have those two SANs contain the same exact data at all times, which will allow us to work with the same data pool, and which will also provide use with an offsite backup solution, should a failure occur on either end. We're running Server 2008. The objective is to enable users in the east coast office to work on files and have those changes be instantly updated on the Colorado SAN as well. We also need there to be file locking so that there will be no conflicts or overwritten changes if users attempt to work on the same file. Is this scenario even possible, at speeds that would make the files usable? And if so, what software would we need to pull this off? As I understand it, DFS-R does not provide file locking, so if we used that, we would need to go with a third-party product like Peerlock. But I don't even know if DFS-R is an option. Can it replicate quickly enough over a WAN link? Can any product? It seems that if we were to use synchronous replication, the programs would be unacceptably slow, as every write would have to wait for confirmation from the other end of the link. But if we used asynchronous replication, what kind of latency would we be looking at? There is a product from GlobalScape called WAFS that claims to provide "File coherence with real-time file locking, file release, and synchronization" and says that "As files are modified, changes are mirrored instantly using intelligent byte-level differencing to minimize the impact on network bandwidth". So this sounds like synchronous replication, but that doesn't even seem possible, given physical limitations such as the speed of light. If anyone has any experience with this kind of setup, or knows whether it's even possible, I'd appreciate your input and suggestions, including recommendations for software that we should check out.

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• Windows 8 ignores more specific route

  - by Lander

  OS: Windows 8 I have a cabled NIC (connected to router with ip 192.168.1.0) and a WIFI NIC (connected to a router with ip 192.168.1.1) . I want all traffic to go through the cabled NIC, except the 192.168.1.0/8 range should use the wifi-nic. This was working fine in Windows 7, without any manual configuration. In Windows 8 however, it's not. My routing table: =========================================================================== Interface List 14...f2 7b cb 13 e7 f0 ......Microsoft Wi-Fi Direct Virtual Adapter 13...b8 ac 6f 54 d2 5c ......Realtek PCIe FE Family Controller 12...f0 7b cb 13 e7 f0 ......Dell Wireless 1397 WLAN Mini-Card 1...........................Software Loopback Interface 1 15...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter 16...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface =========================================================================== IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.1.1 192.168.1.198 30 0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.233 20 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.0.0 255.255.255.0 On-link 192.168.0.233 276 192.168.0.233 255.255.255.255 On-link 192.168.0.233 276 192.168.0.255 255.255.255.255 On-link 192.168.0.233 276 192.168.1.0 255.255.255.0 192.168.1.1 192.168.1.198 31 192.168.1.198 255.255.255.255 On-link 192.168.1.198 286 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.0.233 276 224.0.0.0 240.0.0.0 On-link 192.168.1.198 286 255.255.255.255 255.255.255.255 On-link 127.0.0.1 306 255.255.255.255 255.255.255.255 On-link 192.168.0.233 276 255.255.255.255 255.255.255.255 On-link 192.168.1.198 286 =========================================================================== Persistent Routes: None I added the rule for 192.168.1.0. I would think Windows should use this rule for the IP 192.168.1.1 because it's more specific than the default-route. However it's not: C:\Windows\system32>tracert 192.168.1.1 Tracing route to 192.168.1.1 over a maximum of 30 hops 1 58 ms 4 ms 4 ms 192.168.0.1 2 68 ms 12 ms 11 ms ^C So... What do I do wrong? And how can I make Windows use the wireless NIC for 192.168.1.0/8

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• Weird DNS bug - external server resolves to internal IP

  - by emilecantin

  I have a server that is hosted by my university. I have root access, but no control over network setup, firewall, etc. This server's DNS resolves to an internal IP here on campus (10.x.x.x), and an external IP outside campus. I also have a few servers hosted at Amazon, and they mostly work well. However, one of them started to resolve the university server by its internal IP address. This causes problems, as 10.x.x.x on Amazon EC2 is someone else. I have connected to the Amazon server with SSH agent forwarding a few times in the past, to access a Git repository on the university server. Any idea what could cause this? EDIT: Here's my /etc/resolv.conf # Generated by dhcpcd for interface eth0 search ec2.internal nameserver 172.16.0.23 Here's the output of dig myserver.myuniversity.ca.: ; <<>> DiG 9.8.1-P1 <<>> myserver.myuniversity.ca. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34470 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;myserver.myuniversity.ca. IN A ;; ANSWER SECTION: myserver.myuniversity.ca. 537586 IN A 10.43.x.x ;; Query time: 2 msec ;; SERVER: 172.16.0.23#53(172.16.0.23) ;; WHEN: Wed Nov 28 16:07:21 2012 ;; MSG SIZE rcvd: 60 Here's the expected output (on another Amazon server): ; <<>> DiG 9.8.1-P1 <<>> myserver.myuniversity.ca. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8045 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;myserver.myuniversity.ca. IN A ;; ANSWER SECTION: myserver.myuniversity.ca. 601733 IN A x.x.239.1 ;; Query time: 1 msec ;; SERVER: 172.16.0.23#53(172.16.0.23) ;; WHEN: Wed Nov 28 16:09:36 2012 ;; MSG SIZE rcvd: 60

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• php-fpm + persistent sockets = 502 bad gateway

  - by leeoniya

  Put on your reading glasses - this will be a long-ish one. First, what I'm doing. I'm building a web-app interface for some particularly slow tcp devices. Opening a socket to them takes 200ms and an fwrite/fread cycle takes another 300ms. To reduce the need for both of these actions on each request, I'm opening a persistent tcp socket which reduces the response time by the aforementioned 200ms. I was hoping PHP-FPM would share the persistent connections between requests from different clients (and indeed it does!), but there are some issues which I havent been able to resolve after 2 days of interneting, reading logs and modifying settings. I have somewhat narrowed it down though. Setup: Ubuntu 13.04 x64 Server (fully updated) on Linode PHP 5.5.0-6~raring+1 (fpm-fcgi) nginx/1.5.2 Relevent config: nginx worker_processes 4; php-fpm/pool.d pm = dynamic pm.max_children = 2 pm.start_servers = 2 pm.min_spare_servers = 2 Let's go from coarse to fine detail of what happens. After a fresh start I have 4x nginx processes and 2x php5-fpm processes waiting to handle requests. Then I send requests every couple seconds to the script. The first take a while to open the socket connection and returns with the data in about 500ms, the second returns data in 300ms (yay it's re-using the socket), the third also succeeds in about 300ms, the fourth request = 502 Bad Gateway, same with the 5th. Sixth request once again returns data, except now it took 500ms again. The process repeats for several cycles after which every 4 requests result in 2x 502 Bad Gateways and 2x 500ms Data responses. If I double all the fpm pool values and have 4x php-fpm processes running, the cycles settles in with 4x successful 500ms responses followed by 4x Bad Gateway errors. If I don't use persistent sockets, this issue goes away but then every request is 500ms. What I suspect is happening is the persistent socket keeps each php-fpm process from idling and ties it up, so the next one gets chosen until none are left and as they error out, maybe they are restarted and become available on the next round-robin loop ut the socket dies with the process. I haven't yet checked the 'slowlog', but the nginx error log shows lots of this: *188 recv() failed (104: Connection reset by peer) while reading response header from upstream, client:... All the suggestions on the internet regarding fixing nginx/php-fpm/502 bad gateway relate to high load or fcgi_pass misconfiguration. This is not the case here. Increasing buffers/sizes, changing timeouts, switching from unix socket to tcp socket for fcgi_pass, upping connection limits on the system....none of this stuff applies here. I've had some other success with setting pm = ondemand rather than dynamic, but as soon as the initial fpm-process gets killed off after idling, the persistent socket is gone for all subsequent php-fpm spawns. For the php script, I'm using stream_socket_client() with a STREAM_CLIENT_PERSISTENT flag. A while/stream_select() loop to detect socket data and fread($sock, 4096) to grab the data. I don't call fclose() obviously. If anyone has some additional questions or advice on how to get a persistent socket without tying up the php-fpm processes beyond the request completion, or maybe some other things to try, I'd appreciate it. some useful links: Nginx + php-fpm - recv() error Nginx + php-fpm "504 Gateway Time-out" error with almost zero load (on a test-server) Nginx + PHP-FPM "error 104 Connection reset by peer" causes occasional duplicate posts http://www.linuxquestions.org/questions/programming-9/php-pfsockopen-552084/ http://stackoverflow.com/questions/14268018/concurrent-use-of-a-persistent-php-socket http://devzone.zend.com/303/extension-writing-part-i-introduction-to-php-and-zend/#Heading3 http://stackoverflow.com/questions/242316/how-to-keep-a-php-stream-socket-alive http://php.net/manual/en/install.fpm.configuration.php https://www.google.com/search?q=recv%28%29+failed+%28104:+Connection+reset+by+peer%29+while+reading+response+header+from+upstream+%22502%22&ei=mC1XUrm7F4WQyAHbv4H4AQ&start=10&sa=N&biw=1920&bih=953&dpr=1

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• OpenWRT based gateway with dnsmasq and internal server with bind

  - by Peter

  I have router based on OpenWRT which has dnsmasq 2.59. Inside my local area network I have a NS server bind. This server has internal and external views for a couple of my domains. My router forwards port 53 TCP and UDP from outside IP (router WAN) to this server. For the external clients everything works fine. In order to organize the internal view, I decided to add the exception to /etc/dnsmasq.conf server=/mydomain1.com/192.168.1.1 server=/mydomain2.com/192.168.1.1 server=/mydomain3.com/192.168.1.1 (192.168.1.1 - IP address of the NS server) According to dnsmasq manstrong text: More specific domains take precendence over less specific domains, so: --server=/google.com/1.2.3.4 --server=/www.google.com/2.3.4.5 will send queries for *.google.com to 1.2.3.4, except *www.google.com, which will go to 2.3.4.5 this domain name with all the sub-domains is supposed to be forward to my NS server. Everything works (SOA, NS, MX, CNAME, TXT, SRV etc.) except for A-record: # nslookup -type=a mydomain1.com Server: 192.168.1.100 Address: 192.168.1.100#53 *** Can't find mydomain1.com: No answer 192.168.1.100 - IP address of my router (dnsmasq) However, I can get the answer for the TXT-record query: # nslookup -type=txt mydomain1.com Server: 192.168.1.100 Address: 192.168.1.100#53 mydomain1.com text = "v=spf1 include:mydomain1.com -all" When I just specify the local IP of my NS server (direct access to the server without using dnsmasq) then the results are: # nslookup -type=a mydomain1.com 192.168.1.1 Server: 192.168.1.1 Address: 192.168.1.1#53 Name: mydomain1.com Address: 192.168.1.1 There is a similar situation with the MX-record: C:\>nslookup -type=mx mydomain1.com Server: router.lan Address: 192.168.1.100 mydomain1.com MX preference = 10, mail exchanger = mail.mydomain1.com mydomain1.com nameserver = ns.mydomain1.com mail.mydomain1.com internet address = 192.168.1.1 ns.mydomain1.com internet address = 192.168.1.1 C:\>nslookup -type=a mail.mydomain1.com Server: router.lan Address: 192.168.1.100 *** No address (A) records available for mail.mydomain1.com This is a dig result: # dig +nocmd mydomain1.com any +multiline +noall +answer mydomain1.com. 86400 IN SOA ns.mydomain1.com. hostmaster.mydomain1.com. ( 121204007 ; serial 28800 ; refresh (8 hours) 7200 ; retry (2 hours) 604800 ; expire (1 week) 3600 ; minimum (1 hour) ) mydomain1.com. 86400 IN NS ns.mydomain1.com. mydomain1.com. 86400 IN A 192.168.1.1 mydomain1.com. 604800 IN MX 10 mail.mydomain1.com. mydomain1.com. 3600 IN TXT "v=spf1 include:mydomain1.com -all" When I try to ping: # ping mydomain1.com ping: cannot resolve mydomain1.com: Unknown host Is it a bug of dnsmasq 2.59? How to manage this problem?

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• How to troubleshoot a PHP script that causes a Segmenation Fault?

  - by johnlai2004

  I posted this on stackoverflow.com as well because I'm not sure if this is a programming problem or a server problem. I'm using ubuntu 9.10, apache2, mysql5 and php5. I've noticed an unusual problem with some of my php programs. Sometimes when visiting a page like profile.edit.php, the browser throws a dialogue box asking to download profile.edit.php page. When I download it, there's nothing in the file. profile.edit.php is supposed to be a web form that edits user information. I've noticed this on some of my other php pages as well. I look in my apache error logs, and I see a segmentation fault message: [Mon Mar 08 15:40:10 2010] [notice] child pid 480 exit signal Segmentation fault (11) And also, the issue may or may not appear depending on which server I deploy my application too. Additonal Details This doesn't happen all the time though. It only happens sometimes. For example, profile.edit.php will load properly. But as soon as I hit the save button (form action="profile.edit.php?save=true"), then the page asks me to download profile.edit.php. Could it be that sometimes my php scripts consume too much resources? Sample code Upon save action, my profile.edit.php includes a data_access_object.php file. I traced the code in data_access_object.php to this line here if($params[$this->primaryKey]) { $q = "UPDATE $this->tableName SET ".implode(', ', $fields)." WHERE ".$this->primaryKey." = ?$this->primaryKey"; $this->bind($this->primaryKey, $params[$this->primaryKey], $this->tblFields[$this->primaryKey]['mysqlitype']); } else { $q = "INSERT $this->tableName SET ".implode(', ', $fields); } // Code executes perfectly up to this point // echo 'print this'; exit; // if i uncomment this line, profile.edit.php will actually show 'print this'. If I leave it commented, the browser will ask me to download profile.edit.php if(!$this->execute($q)){ $this->errorSave = -3; return false;} // When I jumped into the function execute(), every line executed as expected, right up to the return statement. And if it helps, here's the function execute($sql) in data_access_object.php function execute($sql) { // find all list types and explode them // eg. turn ?listId into ?listId0,?listId1,?listId2 $arrListParam = array_bubble_up('arrayName', $this->arrBind); foreach($arrListParam as $listName) if($listName) { $explodeParam = array(); $arrList = $this->arrBind[$listName]['value']; foreach($arrList as $key=>$val) { $newParamName = $listName.$key; $this->bind($newParamName,$val,$this->arrBind[$listName]['type']); $explodeParam[] = '?'.$newParamName; } $sql = str_replace("?$listName", implode(',',$explodeParam), $sql); } // replace all ?varName with ? for syntax compliance $sqlParsed = preg_replace('/\?[\w\d_\.]+/', '?', $sql); $this->stmt->prepare($sqlParsed); // grab all the parameters from the sql to create bind conditions preg_match_all('/\?[\w\d_\.]+/', $sql, $matches); $matches = $matches[0]; // store bind conditions $types = ''; $params = array(); foreach($matches as $paramName) { $types .= $this->arrBind[str_replace('?', '', $paramName)]['type']; $params[] = $this->arrBind[str_replace('?', '', $paramName)]['value']; } $input = array('types'=>$types) + $params; // bind it if(!empty($types)) call_user_func_array(array($this->stmt, 'bind_param'), $input); $stat = $this->stmt->execute(); if($GLOBALS['DEBUG_SQL']) echo '<p style="font-weight:bold;">SQL error after execution:</p> ' . $this->stmt->error.'<p>&nbsp;</p>'; $this->arrBind = array(); return $stat; }

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• Understanding packet flows over RVI

  - by choco-loo

  I'm trying to get a full grasp of firewall filters and how to apply them on a Juniper EX4200 switch - to be able to block ports, police traffic and shape traffic. The network architecture is as follows internet >-< vlan4000 >-< vlan43 vlan4000 is a public "routed" block (where all the IPs are routed to and the internet gw is) vlan43 is a vlan with public IPs with devices (servers) attached There are static routes and RVI's on the EX4200 to send all traffic via vlan4000's gateway to reach the internet. I've set up filters on both input and output of the respective RVI's and VLAN's - with simple counters, to measure traffic flow from a server inside of vlan43 and a server on the internet. Using a combination of iperf for UDP and TCP tests and fping for ICMP tests - I observed the following, icmp vlan43>internet internet>vlan43 unit4000-counter-in 0 0 unit4000-counter-out 0 0 unit43-counter-in 100 100 unit43-counter-out 0 0 vlan4000-counter-in 6 4 vlan4000-counter-out 107 104 vlan43-counter-in 101 100 vlan43-counter-out 100 100 tcp vlan43>internet internet>vlan43 unit4000-counter-in 0 0 unit4000-counter-out 0 0 unit43-counter-in 73535 38480 unit43-counter-out 0 0 vlan4000-counter-in 7 8 vlan4000-counter-out 73543 38489 vlan43-counter-in 73535 38481 vlan43-counter-out 38938 75880 udp vlan43>internet internet>vlan43 unit4000-counter-in 0 0 unit4000-counter-out 0 0 unit43-counter-in 81410 1 unit43-counter-out 0 0 vlan4000-counter-in 18 7 vlan4000-counter-out 81429 8 vlan43-counter-in 81411 1 vlan43-counter-out 1 85472 My key goals are to set up a few filters and policers, as there will be many more VLANs - that all need protecting from each other and the internet. Then globally limit/police all outbound traffic to the internet Block inbound ports to vlan43 (eg. 22) Limit outbound traffic from vlan43 (to the internet) Limit outbound traffic from vlan43 (to other vlans) Limit outbound traffic from vlan4000 (to the internet from all vlans) Route traffic from vlans via specific routing instances (FBF) The question What I want to understand is why there isn't ever any activity on unit4000 or vlan4000 inbound or outbound counter - is this because there isn't a device on this VLAN - and that the traffic is only traversing it? And with regards to the TCP test - why is there twice as many packets on unit43-counter-in, vlan4000-counter-out and vlan43-counter-in - is this counting both the inbound and outbound traffic?

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• System Requirements of a write-heavy applications serving hundreds of requests per second

  - by Rolando Cruz

  NOTE: I am a self-taught PHP developer who has little to none experience managing web and database servers. I am about to write a web-based attendance system for a very large userbase. I expect around 1000 to 1500 users logged-in at the same time making at least 1 request every 10 seconds or so for a span of 30 minutes a day, 3 times a week. So it's more or less 100 requests per second, or at the very worst 1000 requests in a second (average of 16 concurrent requests? But it could be higher given the short timeframe that users will make these requests. crosses fingers to avoid 100 concurrent requests). I expect two types of transactions, a local (not referring to a local network) and a foreign transaction. local transactions basically download userdata in their locality and cache it for 1 - 2 weeks. Attendance equests will probably be two numeric strings only: userid and eventid. foreign transactions are for attendance of those do not belong in the current locality. This will pass in the following data instead: (numeric) locality_id, (string) full_name. Both requests are done in Ajax so no HTML data included, only JSON. Both type of requests expect at the very least a single numeric response from the server. I think there will be a 50-50 split on the frequency of local and foreign transactions, but there's only a few bytes of difference anyways in the sizes of these transactions. As of this moment the userid may only reach 6 digits and eventid are 4 to 5-digit integers too. I expect my users table to have at least 400k rows, and the event table to have as many as 10k rows, a locality table with at least 1500 rows, and my main attendance table to increase by 400k rows (based on the number of users in the users table) a day for 3 days a week (1.2M rows a week). For me, this sounds big. But is this really that big? Or can this be handled by a single server (not sure about the server specs yet since I'll probably avail of a VPS from ServInt or others)? I tried to read on multiple server setups Heatbeat, DRBD, master-slave setups. But I wonder if they're really necessary. the users table will add around 500 1k rows a week. If this can't be handled by a single server, then if I am to choose a MySQL replication topology, what would be the best setup for this case? Sorry, if I sound vague or the question is too wide. I just don't know what to ask or what do you want to know at this point.

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• Vagrant-aws not provisioning

  - by SuperCabbage

  I'm trying to spin up and provision an EC2 instance with Vagrant, it successfully creates the instance up and I can then use vagrant ssh to SSH into the it but Puppet doesn't seem to carry out any provisioning. Upon running vagrant up --provider=aws --provision I get the following output Bringing machine 'default' up with 'aws' provider... WARNING: Nokogiri was built against LibXML version 2.8.0, but has dynamically loaded 2.9.1 [default] Warning! The AWS provider doesn't support any of the Vagrant high-level network configurations (`config.vm.network`). They will be silently ignored. [default] Launching an instance with the following settings... [default] -- Type: m1.small [default] -- AMI: ami-a73264ce [default] -- Region: us-east-1 [default] -- Keypair: banderton [default] -- Block Device Mapping: [] [default] -- Terminate On Shutdown: false [default] Waiting for SSH to become available... [default] Machine is booted and ready for use! [default] Rsyncing folder: /Users/benanderton/development/projects/my-project/aws/ => /vagrant [default] Rsyncing folder: /Users/benanderton/development/projects/my-project/aws/manifests/ => /tmp/vagrant-puppet/manifests [default] Rsyncing folder: /Users/benanderton/development/projects/my-project/aws/modules/ => /tmp/vagrant-puppet/modules-0 [default] Running provisioner: puppet... An error occurred while executing multiple actions in parallel. Any errors that occurred are shown below. An error occurred while executing the action on the 'default' machine. Please handle this error then try again: No error message I can then SSH into the instance by using vagrant ssh but none of my provisioning has taken place, so I'm assuming that errors have occured but I'm not being given any useful information relating to them. My Vagrantfile is as following; Vagrant.configure("2") do |config| config.vm.box = "ubuntu_aws" config.vm.box_url = "https://github.com/mitchellh/vagrant-aws/raw/master/dummy.box" config.vm.provider :aws do |aws, override| aws.access_key_id = "REDACTED" aws.secret_access_key = "REDACTED" aws.keypair_name = "banderton" override.ssh.private_key_path = "~/.ssh/banderton.pem" override.ssh.username = "ubuntu" aws.ami = "ami-a73264ce" end config.vm.provision :puppet do |puppet| puppet.manifests_path = "manifests" puppet.module_path = "modules" puppet.options = ['--verbose'] end end My Puppet manifest is as following; package { [ 'build-essential', 'vim', 'curl', 'git-core', 'nano', 'freetds-bin' ]: ensure => 'installed', } None of the packages are installed.

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• mobile broadband recommendations for Lenovo T500

  - by Justin Grant

  I use a Lenovo T500 primarily in and around San Francisco, although I do some travel in the US on business and occasionally to Europe/Asia. I'm looking for a good mobile broadband option for my T500. I am admittedly baffled by the various mobile-broadband choices (3G vs. 4G, WiMax vs. LTE vs. MIMO vs. ..., etc.). My priorities are (in this order): Compatible with Lenovo T500 and Windows 7. I realize only the AT&T accessory card is listed on Lenovo's site, but I've also heard that other cards will work in my T500 too, like the WiMax/Wifi combo card-- so I'm interested in what actually works, not necessarily only what Lenovo is promoting. Reliable coverage in US large cities, especially the SF Bay Area. my IPhone has lousy coverage in many spots, so I'd be nervous about an AT&T 3G option unless the problem is with the IPhone and not AT&T's network. I'm OK with non-great coverage outside major US cities, since I don't do much travel in those areas. Speed. faster is better. Internal card. I'd slightly prefer something I could install inside my T500 instead of a dongle on the side that might break off, although this is my lowest priority so it's not a big deal. Price. I don't want to pay over $100/month. I've tried lots of Googling and haven't come up with clear answers. I've seen lots of general overviews without recommendations, and lots of passionate opinions which don't feel objective (and don't help me understand compatibility with my hardware & geography). Can you recommend a good, objective guide online, ideally for Lenovo although general guide is OK too, which can help me figure out which option is the best one for me? I'd also be interested in your own personal experiences of using mobile broadband using a Lenovo T500. I'll accept the answer which gets me closest to making a decision.

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• Changing default datadirectory to one on a External NAS or add external share

  - by Hagbart Celine

  So I have been searching the web for days, looking for a solution to my problem. Now my only hope are you guys. I have installed Owncloud successfully on my Windows Server 2008R2. It all runs smoothly and I can connect without problems. So first checks are OK. Now I wanted to change the default data directory from my server to a shared folder on my NAS (Synology DS1813+, DSM 5.0-4493 Update 3). Tried following: changing the directory in config.php I changed the path in the config file from : "C:\inetpub\wwwroot\myfolder\data" to "\NASIP\cloud". by doing this the owncloud server only shows: Code: Select all Daten-Verzeichnis (\192.168.2.4\Cloud\data) ist ungültig Bitte stelle sicher, dass das Daten-Verzeichnis eine Datei namens ".ocdata" im Wurzelverzeichnis enthält. I also tried coping the files that were created in the local data storage, to the share on the NAS. No Luck. Now I tried it by mapping a network drive and using that in the config.php But still no luck. I get the same message with the missing .ocdata file. Now I tried the "External Storage APP" that comes with owncloud I thought that at least I could add the share as an external storage. But this also does not work. tried UNC, Mapped Drive Name (Z:) but nothing helped. So now I'm turning to you.. Does anyone have expirience with this kind of setup? Or can you even tell me how to make it work? (default or external storgae, I don't care anymore ) Using NAS (Synology DS1813+, DSM 5.0-4493 Update 3), Owncloud 7, Windows Server 2008 R2, IIS7 I got an answer on an other forum: The second option is how it should be done: 1. Put OC in maintenance mode 2. Mount (mapping in the windows world) your NAS directly to your OS 3. Copy the local data directory to the NAS mount 4. Ensure the permission is setup to give the web user access to the NAS mount 5. Update OC config.php with the new data path 6. Disable OC maintenance mode And this seems like the right way.. Ensure the permission is setup to give the web user access to the NAS mount I guess this is where I am not sure. What user is it exactly on my Server that is making the requests to the NAS? If the user is for example "IUSR" I can just create an account on my synology NAS and give him full access to my share? (But what is IUSRs password?) I have full root ssh access to my NAS, so if you can tell me what chmod or chown I need to use on my cloud folder...

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• Can't set up printing from Mac OS X (10.5.7) to an HP PSC 2410 shared from PC running Ubuntu 9.10

  - by Weston C

  I've got an HP PSC 2410 printer shared from a fresh Ubuntu 9.10 installation. I'm able to send documents to this printer over the network from another Ubuntu machine. But so far, I haven't been able to find a setup where I can send documents to that printer from a MacBook running 10.5.7. On the Mac side, when setting things up, I go into System Prefs Print & Fax, click on the "+" mark, select "IP", pick "IPP", enter the IP address of the Ubuntu box, leave the queue blank, enter the Name and location, and I think it's when I get to the "Print Using" (driver selection) part that I'm running into issues. If I use "Auto Select", it defaults to "Generic PostScript Printer", which I doubt the PSC 2410 is (and sure enough, if I print, the jobs don't go through). If I try "Select a driver to use...", there's not an option for an HP PSC 2400. This seems a little odd: I can plug the printer directly into one of our Macs and it immediately figures out the driver and I can print no problem, but that's apparently the way things work. So, that leaves one option: "Other", which, when selected, brings up a dialog apparently for the purpose of manually locating a driver. I've tried visiting HP's web site. They have drivers for earlier versions of Mac OS X, but state that after 10.4, Mac OS X should just come with the relevant drivers. I've also tried setting things up by interacting with the CUPS server on the Mac through a browser: I go to http://localhost:631/, select "Add New Printer", pick "Internet Printing Protocol (http)" for the Device selection, enter "http://ubuntu.machine.ip.address:631/printers/hp-psc-2400-series" for the Device URI, select "HP" for Make, and then on the next screen, we're back to the problem where the PSC 2400 just doesn't show up. There's an option to "provide a PPD file", which I assume would be the printer driver I can't find. A Google search for "HP PSC 2410 ppd Leopard" doesn't seem to yield much other than a reminder that the printer is supposed to just work out of the box on Leopard. A local search for ".ppd" or "2410" on either Mac also doesn't yield anything that looks like a relevant print driver. I'm totally stuck at this point. Any advice?

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• TCP/IP & throughput between FreeNAS (BSD) server & other LAN machines

  - by Tim Dickerson

  I have got a question for someone that knows BSD a bit better than me that are in regards to my LAN setup at home/work here outside Chicago. I can't seem to fully optimize my network's (LAN) thoughput via my FreeNAS (BSD based) file server. It runs with the latest FreeBSD release which is modified to support several protocols for file transfers and more. Every machine that is behind my Smoothwall (Linux based) router is on the usual 192.168.0.x subnet and for most part works just fine. Behind the Smoothwall box, all machines are connected to a GB HP unmanaged switch. I host a large WISP here and have an OC-3 connection here at home/work and have no issues with downloading/uploading from/to the 'net'. My problem is with throughput. When I try and transfer large files...really any for that matter..between any of the machines to/and from the FreeNAS server via FTP, the max throughput I can achieve say between a Win 7 or a Linux box is ~65Mbit/sec. All machines are running Intel Pro 1000 GB NIC's and all cable is CAT6. Each is set to 'auto negotiation' and each shows 1500 MTU Full Duplex @1GB so I know the hardware is okay. I have not adjusted the MTU on any machine as I understand it to be pointless unless certain configurations are used (I assume I am not one of those). My settings for the FreeNAS machine are the following: # FreeNAS /etc/sysctl.conf - pertinent settings shown kern.ipc.maxsockbuf=262144 kern.ipc.nmbclusters=32768 kern.ipc.somaxconn=8192 kern.maxfiles=65536 kern.maxfilesperproc=32768 net.inet.tcp.delayed_ack=0 net.inet.tcp.inflight.enable=0 net.inet.tcp.path_mtu_discovery=0 net.inet.tcp.recvbuf_auto=1 net.inet.tcp.recvbuf_inc=524288 net.inet.tcp.recvbuf_max=16777216 net.inet.tcp.recvspace=65536 net.inet.tcp.rfc1323=1 net.inet.tcp.sendbuf_inc=16384 net.inet.tcp.sendbuf_max=16777216 net.inet.tcp.sendspace=65536 net.inet.udp.recvspace=65536 net.local.stream.recvspace=65536 net.local.stream.sendspace=65536 net.inet.tcp.hostcache.expire=1 From what I can tell, that looks to be a somewhat optimized profile for a typical BSD machine acting as a server for a LAN. I might be wrong and just wanted to find out from someone that knows BSD better than I do if indeed that is ok or if something is out of tune or what. Are there other ways I would find better for P2P file transfers? I honestly do not know what I SHOULD be looking for with respect to throughput between the NAS box and another client when xferring files via FTP, but I am told that what I get on average (40-70MB/sec) is too low for what it could be. I have thought about adding another NIC in the FreeNAS box as well as the Win7 machine and use a X-over cable via a static route, but wanted to check with someone first to see if that might be worth it or not. I don't know if doing that would bypass the HP GB switch and allow for a machine to machine xfer anyways. The FTP client I use is: Filezilla and have tried both active and passive modes with no real gain over each other. The NAS box runs ProFTPD.

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• How to configure Transparent IP Address Sharing (TAS) on a Mediatrix 4102 with DGW 2.0 firmware?

  - by Pascal Bourque

  I am making the switch to VoIP. I chose voip.ms as my service provider and Mediatrix 4102 as my ATA. One reason why I chose the Mediatrix over other popular consumer ATAs is that it's supposed to be easy to place it in front of the router, so it can give priority to its own upstream traffic over the home network's upstream traffic. This is supposed to work transparently, with the ATA and router sharing the same public IP address (the one obtained from the modem). They call this feaure Transparent IP Address Sharing, or TAS. Their promotional brochure describes it like this: The Mediatrix 4102 also uses its innovative TAS (Transparent IP Address Sharing) technology and an embedded PPPoE client to allow the PC (or router) connected to the second Ethernet port to have the same public IP address, eliminating the need for private IP addresses or address translations. I am interested by this feature because my router, an Apple Time Capsule, doesn't support QoS and cannot give priority to the voice packets if the ATA is behind the router. However, after hours of searching the web, reading the documentation, and good ol' trial and error, I haven't been able to configure the Mediatrix to run in this mode. Then I found a version of the manual that looks like it was for a previous version of the firmware (SIP), where there is an entire section dedicated to configuring TAS (starting at page 209). But my Mediatrix comes with the DGW 2.0 firmware, whose documentation does not mention TAS at all. So I tried to follow the TAS setup instructions from the SIP documentation and apply them to my DGW firmware, using the Variable Mapping Between SIP v5.0 and DGW v2.0 document as a reference, but no success. Some required SIP variables don't have an equivalent in DGW. So it looks like the DGW firmware does not support TAS at all, or if it does they are not doing anything to help us set it up. So right now, the Mediatrix is behind the router and VoIP works perfectly except when my upstream bandwidth is saturated. My questions are: Is downgrading to SIP firmware the only way to have my Mediatrix 4102 run in TAS mode? If not, anybody knows how to setup TAS on the DGW firmware? Is TAS mode the only way to give priority to the voice packets if I want to keep my current router (Apple Time Capsule)? Thanks!

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• X:\ is not accessible. Insufficient system resources exist to complete the requested service. Help [

  - by Katherine

  I keeping getting the error message from above on multiple computers that I administer. I wasn't sure if I should be posting this on SuperUser or ServerFault so my apologizes if it should go there... Basically, I have at least 5 computers of varying ages (some fresh out of the box!) throwing the above error. X:\ is one of our network drives that is mapped for users. Most of the time if you shut down the biggest application it will fix the problem, but it's becoming an increasing issue, and I can't keep running around fixing it manually. I have tried to do some research, but most of it just states the obvious without supplying a permanent fix. The machines are all running Win XP SP3, with at least 2gb of ram. Sorry for the delay in getting back to people... a lot of good questions. To respond back to people... It is a windows 2003 server that houses the file share. We have about 175 users, however i cannot state how many are actually accessing the information at a single moment. Considering that this is our largest file share, I would say that probably at least 100+. The files we work with are large, but not that big considering that we do a lot of graphical and video work. ~50mb. That being said, this is error occurs simply when trying to gain access to the server itself, not actual files. When I say close a program, I mean that it can be any program. It doesn't matter which program. It varies from machine to machine, and from day to day. Some days it is Firefox, some days it is Outlook, some days it is Excel. There doesn't seem to be a common bond behind which application could be causing the problem. Thank you for the articles, and the recommendation on paging files. I will have to look into that. None of our computers are set to hibernate, so I am going to rule that out.

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• Adobe Reader not loading form content

  - by wullxz

  We have an FDL file which is used to offer an online application possibility. The FDL is filled out and sent to a mailbox. When I open the received file, Adobe Reader starts, loads the document in Internet Explorer (had to change my default browser because it doesn't work in chrome - the customer uses IE as default) and displays a warning that Adobe Reader has blocked the connection to the server where the initial document is saved: I can then click on "Trust this document once" (translated by me!) or "Add this host to trusted hosts" (also translated by me!). The second option doesn't work at all. The first option works but is a little bit annoying. I looked into Adobe Readers options (Edit - "Voreinstellungen" in german / the last option - Security (advanced)) and found the possibility to add hosts, files and directories or allow Adobe Reader to use the "Trusted Websites" list from Internetoptions. When I add the website either to Trusted Websites or the trusted list in Adobe Readers options, the warning doesn't pop up but the content in the prefilled (by the applicant) input boxes of the document doesn't show up on Windows 7 but it does show up on Windows XP. This Screenshot shows the settings window described in the last paragraph. The big input box at the bottom normally holds the trusted files/directories/hosts list. System Information: Windows 7 Enterprise x64 Adobe Reader X multiple IE versions (mine is latest but there's also IE 7 or 8) How do I get Adobe Reader to load the content of the form? This behaviour can be reproduced on a PC. When opening an fdf from a command line the form fields are blank even though there is data in the fdf and the pdf is located in a mnaully entered trsuted folder. Steps to reproduce: Clean install a Windows 7 PC (or use a virtual box) Map a network drive to a shared folder with a subfolder e.g. c:\test\docs becomes m:\docs Set security permissions to allow full control to everyone Add an fdf and a matching pdf file in the subfolder Manually add m:\docs to each of the trusted folders in the trust manager registry settings Ensure that Enhanced Security is on Run a command line to open the fdf file Expected result: pdf is opened in Adobe Reader with form fields filled out with data Actual results: pdf is opened with blank fields 'Yellow bar' appears asking to add document to trusted locations It appears that Adobe Reader XI is ignoring the privileged locations entries in the registry. Adding the document via the 'yellow bar' adds the individual document, with the same folder, to the privileged locations but means that the process has to be repeated for every document that needs to be opened from the folder.

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• Windows 8 with LiveID login authenticates as Guest to remote SQl Server

  - by Tim Long

  I have a network where several users are using Office Accounting 2009 in multi-user client/server mode. OA is built on SQL Server. One PC acts as the 'server' and has the SQl Server instance, the others have only the application installed and no SQL instance, all of the apps connect remotely to the SQL instance on the 'server'. I'm using the term 'server' loosely here, it is just a normal workstation that happens to be designated as the server and runs the SQL instance. There is no NT domain, all user accounts are local accounts. The way that OA works in multi-user mode is that each user is required to have a local account with the same username and password on both the client and 'server' PCs. This has been working well, no along comes Windows 8. I use my 'Microsoft Account' aka LiveID to log into Windows 8. Office Accounting runs fine and attempts to connect to the database, but fails, 'you do not have permission to perform this operation'. In the SQL logs, I get this error: 2012-10-28 17:54:01.32 Logon Error: 18456, Severity: 14, State: 11. 2012-10-28 17:54:01.32 Logon Login failed for user 'SERVER\Guest'. Reason: Token-based server access validation failed with an infrastructure SERVER is the hostname of the server. So it seems to be authenticating as 'Guest'?? To verify this, I enabled the Guest account on the 'server' PC and then added Guest as an allowed user within Office Accounting (this simply creates the user in SQL and gives it an appropriate database role). Sure enough, My Windows 8 PC was then able to connect to the database when using Office Accounting. Clearly, having users authenticate as 'Guest' stinks from a security and auditing standpoint. So what I need are some ideas for how to work around this. I've tried switching the Windows 8 PC to a 'local account' and that works too, but requires giving up significant functionality on the Windows 8 PC. What I really need is a way to force the Windows 8 PC to use a specific set of credentials when connecting to the remote SQL instance. Office Accounting takes the logged in username, which is my LiveID and doesn't correspond to any Windows user name. Anyone solved this issue?

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• Fix/Bypass "Cannot connect to the real website-blocked" error in Google Chrome with OpenDNS blocking

  - by George H

  I have a large problem with Chrome in my organisation. I use DNS to manage web site blocking, for sites which are not appropriate and are potentially a risk to the organisation where I do this. I only want to use Chrome over the network, as Internet Explorer has compatibility problems with some sites that we use (We cannot change this either or use different sites). Therefore using internet explorer is not a solution. I do not want to install a different browser, for multiple reasons. Mainly because of the difficulty of rewriting the customised add-ons that we use. However, recently, I have had lots of problems with Chrome SSL Errors. I cannot use my custom OpenDNS block pages, which uses the contact form to request an unblocking. Chrome often blocks OpenDNS for sites (a good example is Facebook) that request HTTPS. Some sites like https://internetbadguys.com (OpenDNS example) This means that chrome refuses to load the blocking page, explaining that the site is blocked. Instead they often call IT support, but they want a solution, as they are sick of getting lots of SSL errors. I have tried looking into ways to turning this off. I have tried: Typing "proceed". That didn't work. Typing "proceed", pressing enter. Didn't work I cannot find phishing and anti-malware any more in Chrome, from the internet guides. Not using HTTPS. However there is an automatic redirect to HTTPS on most sites. Therefore the error keeps coming up. Checking my clocks. They were correct. Does anyone have an idea on how to disabling, bypassing or working around this "feature"? EDIT: This is an example what I am talking about - I found that on google images. I do not block google. EDIT 2: My clocks are correct. I cannot stop using OpenDNS either. EDIT 3: My question is: How do I stop chrome from refusing to load pages that are blocked by OpenDNS, where the server has explicitly requested HTTPS.

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