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• bind9 "error sending response: host unreachable"

  - by wolfgangsz

  of course), I have a number of DNS servers, all running bind9 (9.5.1, to be specific) under fedora. 4 of them are slaves, fed by a common master for our public DNS. These are all located on the public gateways of our various offices. One of them has tons of messages in its log files similar to these: Jul 21 17:26:18 gateway named[3487]: client 10.171.3.8#52500: view internal: error sending response: host unreachable I wonder where that comes from. The firewall is open on port 53 between the two machines (10.171.3.8 is an internal DNS server located on a Windows Domain Controller). The internal domains do NOT list the gateway as a name server (so there should not be any attempts of replicating the domains), and the gateway does not handle any internal DNS. The clients in these messages vary between the two domain controllers on the internal network and a third internal name server (running bind9 on debian in a different segment of the network). Any pointers are highly welcome. In response to the first reply: The issue with this really is that tcpdump doesn't show any problems. Here is an extract from "tcpdump -i any port 53" 09:13:38.283308 IP valine.aminocom.com.61815 ns-pri.ripe.net.domain: 14075 PTR? 166.225.58.95.in-addr.arpa. (44) 09:13:42.007410 IP gateway-eng.aminocom.com.37047 alanine.aminocom.com.domain: 35410+ PTR? 12.3.172.10.in-addr.arpa. (42) At the same time, the DNS log shows: Jul 22 09:13:38 gateway named[3487]: client 10.171.3.6#61300: view internal: error sending response: host unreachable Jul 22 09:13:40 gateway named[3487]: client 10.172.3.12#56230: view internal: error sending response: host unreachable Jul 22 09:13:40 gateway named[3487]: client 10.171.3.8#55221: view internal: error sending response: host unreachable Jul 22 09:13:49 gateway named[3487]: client 10.171.3.8#51342: view internal: error sending response: host unreachable So clearly at 09:13:40 there were two unsuccessful attempts to connect to internal machines (10.172.3.12 and 10.171.3.8, both are DNS servers), but nothing in the tcpdump output.

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• OpenIndiana (illumos): vmxnet3 interface lost on reboot

  - by protomouse

  I want my VMware vmxnet3 interface to be brought up with DHCP on boot. I can manually configure the NIC with: # ifconfig vmxnet3s0 plumb # ipadm create-addr -T dhcp vmxnet3s0/v4dhcp But after creating /etc/dhcp.vmxnet3s0 and rebooting, the interface is down and the logs show: Aug 13 09:34:15 neumann vmxnet3s: [ID 654879 kern.notice] vmxnet3s:0: getcapab(0x200000) -> no Aug 13 09:34:15 neumann vmxnet3s: [ID 715698 kern.notice] vmxnet3s:0: stop() Aug 13 09:34:17 neumann vmxnet3s: [ID 654879 kern.notice] vmxnet3s:0: getcapab(0x200000) -> no Aug 13 09:34:17 neumann vmxnet3s: [ID 920500 kern.notice] vmxnet3s:0: start() Aug 13 09:34:17 neumann vmxnet3s: [ID 778983 kern.notice] vmxnet3s:0: getprop(TxRingSize) -> 256 Aug 13 09:34:17 neumann vmxnet3s: [ID 778983 kern.notice] vmxnet3s:0: getprop(RxRingSize) -> 256 Aug 13 09:34:17 neumann vmxnet3s: [ID 778983 kern.notice] vmxnet3s:0: getprop(RxBufPoolLimit) -> 512 Aug 13 09:34:17 neumann nwamd[491]: [ID 605049 daemon.error] 1: nwamd_set_unset_link_properties: dladm_set_linkprop failed: operation not supported Aug 13 09:34:17 neumann vmxnet3s: [ID 654879 kern.notice] vmxnet3s:0: getcapab(0x20000) -> no Aug 13 09:34:17 neumann nwamd[491]: [ID 751932 daemon.error] 1: nwamd_down_interface: ipadm_delete_addr failed on vmxnet3s0: Object not found Aug 13 09:34:17 neumann nwamd[491]: [ID 819019 daemon.error] 1: nwamd_plumb_unplumb_interface: plumb IPv4 failed for vmxnet3s0: Operation not supported on disabled object Aug 13 09:34:17 neumann nwamd[491]: [ID 160156 daemon.error] 1: nwamd_plumb_unplumb_interface: plumb IPv6 failed for vmxnet3s0: Operation not supported on disabled object Aug 13 09:34:17 neumann nwamd[491]: [ID 771489 daemon.error] 1: add_ip_address: ipadm_create_addr failed on vmxnet3s0: Operation not supported on disabled object Aug 13 09:34:17 neumann nwamd[491]: [ID 405346 daemon.error] 9: start_dhcp: ipadm_create_addr failed for vmxnet3s0: Operation not supported on disabled object I then tried disabling network/physical:nwam in favour of network/physical:default. This works, the interface is brought up but physical:default fails and my network services (e.g. NFS) refuse to start. # ifconfig -a lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1 inet 127.0.0.1 netmask ff000000 vmxnet3s0: flags=1004843<UP,BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 9000 index 2 inet 192.168.178.248 netmask ffffff00 broadcast 192.168.178.255 vmxnet3s0:1: flags=1004842<BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 9000 index 2 inet 192.168.178.248 netmask ffffff00 broadcast 192.168.178.255 vmxnet3s0:2: flags=1004842<BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 9000 index 2 inet 192.168.178.248 netmask ffffff00 broadcast 192.168.178.255 vmxnet3s0:3: flags=1004842<BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 9000 index 2 inet 192.168.178.248 netmask ffffff00 broadcast 192.168.178.255 vmxnet3s0:4: flags=1004842<BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 9000 index 2 inet 192.168.178.248 netmask ffffff00 broadcast 192.168.178.255 vmxnet3s0:5: flags=1004842<BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 9000 index 2 inet 192.168.178.248 netmask ffffff00 broadcast 192.168.178.255 vmxnet3s0:6: flags=1004842<BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 9000 index 2 inet 192.168.178.248 netmask ffffff00 broadcast 192.168.178.255 vmxnet3s0:7: flags=1004842<BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 9000 index 2 inet 192.168.178.248 netmask ffffff00 broadcast 192.168.178.255 vmxnet3s0:8: flags=1004842<BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 9000 index 2 inet 192.168.178.248 netmask ffffff00 broadcast 192.168.178.255 lo0: flags=2002000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv6,VIRTUAL> mtu 8252 index 1 inet6 ::1/128 vmxnet3s0: flags=20002000840<RUNNING,MULTICAST,IPv6> mtu 9000 index 2 inet6 ::/0 # cat /var/svc/log/network-physical\:default.log [ Aug 16 09:46:39 Enabled. ] [ Aug 16 09:46:41 Executing start method ("/lib/svc/method/net-physical"). ] [ Aug 16 09:46:41 Timeout override by svc.startd. Using infinite timeout. ] starting DHCP on primary interface vmxnet3s0 ifconfig: vmxnet3s0: DHCP is already running [ Aug 16 09:46:43 Method "start" exited with status 96. ] NFS server not running: # svcs -xv network/nfs/server svc:/network/nfs/server:default (NFS server) State: offline since August 16, 2012 09:46:40 AM UTC Reason: Service svc:/network/physical:default is not running because a method failed. See: http://illumos.org/msg/SMF-8000-GE Path: svc:/network/nfs/server:default svc:/milestone/network:default svc:/network/physical:default Reason: Service svc:/network/physical:nwam is disabled. See: http://illumos.org/msg/SMF-8000-GE Path: svc:/network/nfs/server:default svc:/milestone/network:default svc:/network/physical:nwam Reason: Service svc:/network/nfs/nlockmgr:default is disabled. See: http://illumos.org/msg/SMF-8000-GE Path: svc:/network/nfs/server:default svc:/network/nfs/nlockmgr:default See: man -M /usr/share/man -s 1M nfsd Impact: This service is not running. I'm new to the world of Solaris, so any help solving would be much appreciated. Thanks!

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• Can ISC dhcpd operate as a proxy dhcp server for PXE boot?

  - by Matt

  I have an existing LAN with a DHCP server already dishing out IP addresses. For various reasons I cannot replace that server so it will still need to dish out IP addresses. I've been experimenting with dnsmasq in proxy mode to provide PXE boot filenames. Now I have dnsmasq chainloading iPXE ok, but I found that the problem with dnsmasq is that in proxy mode it won't send dhcp options down. So I can't seem to send option 17 to boot iscsi san. I read somewhere that it's not enabled in the source code. Oh well, so I thought perhaps I should try isc dhcpd (default version4 with ubuntu). But I can't find any configuration examples that work as a proxy. Does isc dhcpd even work in proxy mode? examples on the web imply patching the source. What other options do I have?

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• Multiple vlans access to shared pbx system

  - by Matt

  I'm new to networking and was looking for some assistance. First off I'm using packet tracer to diagram my scenario as I will be receiving my equipment next week to deploy. Hardware to be used: 2 catalyst 3560 switches all connect to a sonic wall router I have two companies that work in the same office space. I need to keep these companies separate on their own vlan. They will however need to share the phone system. (Packet tracer file uploaded to give those who have the time to see what I put together.) http://dl.dropbox.com/u/86234623/network%20build.pkt Here is my current test scenario: on switch 0 I have: company A on vlan 2 computers 172.16.1.100 and 101 255.255.0.0 FA0/10 FA0/11 company B on vlan 3 computers 172.16.2.102, 255.255.0.0 FA0/12 PBX on a trunk port 172.16.0.5, 255.255.0.0 FA0/5 trunk port on FA0/1 to connect the switches on switch 1 I have: company A on vlan 2 computers 172.16.1.102, 255.255.0.0 company B on vlan 3 computers 172.16.2.100 and 101, 255.255.0.0 trunk port on FA0/1 to connect the switches I can ping the respective computers on the same vlan but cant ping company A to B which is what I want. However neither company can talk (ping) the PBX. Here are the commands I used to configure what I have: switch 0 en conf t vlan 2 name A vlan 3 name B int fa0/10 switchport mode access switchport access vlan 2 int fa0/11 switchport mode access switchport access vlan 2 int fa0/12 switchport mode access switchport access vlan 3 int fa0/5 switchport trunk encapsulation dot1q switchport mode trunk switchport trunk allowed vlan 1-3 int fa0/1 (to connect the switches) switchport trunk encapsulation dot1q switchport mode trunk switchport trunk allowed vlan 1-3 Switch 1 en conf t vlan 2 name A vlan 3 name B int fa0/10 switchport mode access switchport access vlan 3 int fa0/11 switchport mode access switchport access vlan 3 int fa0/12 switchport mode access switchport access vlan 2 int fa0/1 (to connect the switches) switchport trunk encapsulation dot1q switchport mode trunk switchport trunk allowed vlan 1-3

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• How to shutdown VMware Fusion virtual machine on host shutdown

  - by Nikksno

  I have a Mac mini running Mavericks server. I installed the Atmail server + webmail vm [a linux centos distribution] in VMware Fusion Professional 6 with the VMware Tools addon. It works flawlessly. I've set it to start on boot and that works very reliably. However I've been looking for a way to also safely and gracefully shut it down whenever OS X shuts down for whatever reason. The Mac is connected to a UPS and configured to perform an automatic shutdown in case the battery starts running low so that's no additional problem. Now the first thing I did was to go into Fusion's prefs and select "Power off the vm" when closing it. However I noticed that for some arcane reason closing the vm window would actually forcibly power off the vm: so then I found this post that showed me how to change the default power options and I managed to have the vm cleanly shutdown when closing its window or quitting Fusion altogether. At this point I was hoping to have solved the problem but as it turns out upon invoking system shutdown OS X doesn't wait for the vm to shutdown and terminates Fusion before it has a chance to do so. At this point I started looking for a way to automate the process of shutting down the guest os via some advanced setting but had no luck in doing so. That's when I found a command to shut the vm down: vmrun and it worked. The only thing left was to find out a way to execute this script on os x shutdown and giving it a little time to power off completely. However this turned out to be a nightmare: I spent hours looking through several ways to do this with Startup Items, rc.shutdown, cron, launchd, etc... but none of them worked the way I had configured them. I have to say that I found very limited information on using launchd for a shutdown script execution and I know it's the latest thing in the OS X world so I'm hoping someone out there among you will be able to help me out with this. I still think this is an extremely basic feature to ask for and I was really surprised to find this little documentation on so many different aspects of this problem. Is Fusion too basic of an application for this? I really hope someone can help. Thank you very much in advance.

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• long access times and errors in iis application

  - by user55862

  I am having an issue with an IIS application (details of environment at the end of the message). The web site works great most of the time and I cannot reproduce any error in our test system. On the live system however with on averare of 5-15 requests per second I have a problem with that some requests (about 0.05%) will take over 300 seconds to complete. The other requests complete withing 5-10 seconds. It seem like if all the errornous requests end up with a Timer_EntityBody error in the error log. I have never seen this as an end user but I guess that they will receive some kind of error message. I am trying to find out what can be causing this errornous behaviour. Any ideas are welcome. I have read something about that there can be an MTU issue if ICMP and MTU protocols are blocked in the firewall. Does that sound reasonable? I have also read about updating to IIS 7 should do the trick. Does it sound reasonable? I think that the problem has another cause but I have no idea of what. I have tried running hte perormance monitor, monitoring for database locks and active transaction counts. I can see some of these in the perfmon log for the MSSQL server (another machine) for example: Active transactions is sometimes peaking and sometimes for long periods Lock waits per seconds is sometimes peaking Transactions per second is sometimes peaking Page IO Latch wait is sometimes peaking Lock wait time (ms) is sometimes peaking But I cannot see that any of these correlate to the errors in the IIS error log. On the IIS server machine I can also see with perfmon that some values peak a few times during a day: Request execution time Avg disk queue length I can neither see that any of these correlate to the errors in the IIS error log. In the below code I have anonymized by replacing some parts with HIDDEN The following can be seen in the access log 2010-10-01 08:35:05 W3SVC1301873091 **HIDDEN** POST /**HIDDEN**/Modules/BalanceModule.aspx - 80 - **HIDDEN** Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+.NET+CLR+2.0.50727;+.NET+CLR+3.0.4506.2152;+.NET+CLR+3.5.30729;+.NET4.0C;+.NET4.0E) ASP.NET_SessionId=**HIDDEN** 400 0 64 0 2241 127799 At the same time the following can be seen in the error log: 2010-10-01 08:35:05 **HIDDEN** 1999 **HIDDEN** 80 HTTP/1.0 POST /**HIDDEN**/Modules/BalanceModule.aspx - 1301873091 Timer_EntityBody Test+Pool I can tell the following about the environment: Server: Windows Server 2003 x64 SP2 running on VMWare HTTP Server: IIS v6.0 with ASP.NET 2.0.50727 Antivirus: Trend Micro OfficeScan (Is it a good idea to have this on a server?)

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• Exim forwards not going out through TLS

  - by Blake

  I'm trying to get Exim to use STARTTLS to send emails that are just FORWARDS. I have a server accepting email at example-accepting.com for users. So I want [email protected] to forward all email to [email protected]. If I do this from the command like on example-accepting.com... echo "test" | mail -s "ssl/tls test" [email protected] Success!! Sent via TLS BUT, if I send an email to [email protected] the forward fails, it's NOT being sent via TLS. I've tried both forwarding the email via /etc/aliases and the user .forward file. The email is indeed sent, but NOT via TLS. Why is it when I run "mail" from the command like it's working like it should, but a .forward is not using TLS? Thanks

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• hMail server - sending copy of an e-mail changing the sender

  - by Beggycev

  Dear All please help me with following request. I am using hMail server in a company(test.com) and have several hundred of guest e-mail accounts ([email protected]). I need to accomplish this: When any of the guest e-mails receives a message(either from internal or external sender) this e-mail(or its copy) is sent to another address "[email protected]" which is the same for all of these guest e-mails. But I need the sender to be identified as the [email protected] not as the original sender which happens when I use forwarding. I tried to prepare a simple VBS script using the OnAcceptMessage event to accomplish this. and it works on my testing machine without internet connectivity but not in the production environment. To be specific, if I send an e-mail to [email protected] in my test env it is delivered to the [email protected] with [email protected] being a sender. But in the production env the e-mail stays in the guest mailbox with the original sender. I am interested in any solution, using a rule in hMail or script, anything is welcome. Thank you for any help! The script: Sub OnAcceptMessage(oClient, oMessage) 'creating application object in order to perform operations as hMail server administrator Dim obApp Set obApp = CreateObject("hMailServer.Application") Dim adminLogin Dim adminPassword 'Enter actual values for administrator account and password 'CHANGE HERE: adminLogin = "Admin_login" adminPassword = "password" Call obApp.Authenticate(adminLogin, adminPassword) Dim addrStart 'Take first 5 characters of recipients address addrStart = Mid(oMessage.To, 1, 5) 'if the recipient's address start with "guest" if addrStart = "guest" then Dim recipient Dim recipientAddress 'enter name of the recipient and respective e-mail address() 'CHANGE HERE: recipient = "FINAL" recipientAddress = "[email protected]" 'change the sender and sender e-mail address to the guest oMessage.FromAddress = oMessage.To oMessage.From = oMessage.To & "<" & oMessage.To & ">" 'delete recipients and enter a new one - the actual mps and its e-mail from the variables set above oMessage.ClearRecipients() oMessage.AddRecipient recipient, recipientAddress 'save the e-mail oMessage.save end if End Sub

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• NRPE unable to read output, but why?

  - by ticktockhouse

  I have this problem with NRPE, all the stuff I've found so far on the net seems to point me at things I've already tried. # /usr/local/nagios/plugins/check_nrpe -H nrpeclient gives NRPE v2.12 as expected. Running the command by hand (as defined in nrpe.cfg on "nrpeclient", gives the expected response nrpe.cfg: command[check_openmanage]=/usr/lib/nagios/plugins/additional/check_openmanage -s -e -b ctrl_driver=0 bat_charge "Expected response" But if I try to run the command from the Nagios server I get the following: # /usr/local/nagios/plugins/check_nrpe -H comxps -c check_openmanage NRPE: Unable to read output Can anyone think of anywhere else I might have made a mistake with this? I've done the same thing on multiple other servers with no problem. The only difference I can think of with this is that this box is RHEL 5 based, whereas the others are RHEL 4 based. Those two bits above that I've tested are the what most people seem to suggest when people have had this problem. I should mention that I get a weird error in the logs when I restart nrpe: nrpe[14534]: Unable to open config file '/usr/local/nagios/etc/nrpe.cfg' for reading nrpe[14534]: Continuing with errors... nrpe[14535]: Starting up daemon nrpe[14535]: Warning: Daemon is configured to accept command arguments from clients! nrpe[14535]: Listening for connections on port 5666 nrpe[14535]: Allowing connections from: bodbck,combck,nam-bck Even though, it's plainly reading that /usr/local/nagios/etc/nrpe.cfg file to get the stuff it's talking about further down..

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• cron.daily not running at the time it should?

  - by Mariano Martinez Peck

  My /etc/cron.daily scripts seem to be executing far later from what I understand they should. I am in Ubuntu and anacron is installed. If I do a sudo cat /var/log/syslog | grep cron I get something like: Aug 23 01:17:01 mymachine CRON[25171]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Aug 23 02:17:01 mymachine CRON[25588]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Aug 23 03:17:01 mymachine CRON[26026]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Aug 23 03:25:01 mymachine CRON[30320]: (root) CMD (test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )) Aug 23 04:17:01 mymachine CRON[26363]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Aug 23 05:17:01 mymachine CRON[26770]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Aug 23 06:17:01 mymachine CRON[27168]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Aug 23 07:17:01 mymachine CRON[27547]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Aug 23 07:30:01 mymachine CRON[2249]: (root) CMD (start -q anacron || :) Aug 23 07:30:02 mymachine anacron[2252]: Anacron 2.3 started on 2014-08-23 Aug 23 07:30:02 mymachine anacron[2252]: Will run job `cron.daily' in 5 min. Aug 23 07:30:02 mymachine anacron[2252]: Jobs will be executed sequentially Aug 23 07:35:02 mymachine anacron[2252]: Job `cron.daily' started As you can see, at 3:25 it tried to do something. But the cron.daily execution started really at 7:35. My /etc/crontab is: # /etc/crontab: system-wide crontab # Unlike any other crontab you don't have to run the `crontab' # command to install the new version when you edit this file # and files in /etc/cron.d. These files also have username fields, # that none of the other crontabs do. SHELL=/bin/sh PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin # m h dom mon dow user command 17 * * * * root cd / && run-parts --report /etc/cron.hourly 25 3 * * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily ) 47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly ) 52 6 1 * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly ) # From what I understand, daily scripts are indeed for 3:25. My /etc/anacrontab is: # /etc/anacrontab: configuration file for anacron # See anacron(8) and anacrontab(5) for details. SHELL=/bin/sh PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin HOME=/root LOGNAME=root # These replace cron's entries 1 5 cron.daily run-parts --report /etc/cron.daily 7 10 cron.weekly run-parts --report /etc/cron.weekly @monthly 15 cron.monthly run-parts --report /etc/cron.monthly So...does someone know why my cron started to do something at 3:25 but then really start the jobs at 7:35? Also..as you can see in the log, hourly jobs are being executed at correct time: hour and 17 minutes, which is exactly what I have in /etc/crontab Finally, from the logs, it seems my daily jobs are being actually run by anacron rather than cron? So cron finds nothing to run (at 3:25) and then anacron runs the jobs at 7:35? If true, how can I fix this? Thanks in advance,

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• VPN - Cisco 2800 Series Router and Cisco ASA

  - by NickToyota

  What I currently have: Windows 2003/2008 servers supporting a 150 user environment. Linksys RV082 Router (HQ) and RV042 (satellite) routers Site to Site VPN Tunneling to 5 satellite (< 10 user) offices What I need: End-user VPN allowing myself and users to connect remotely to my network I need to replace our current routers and have been recommended the 2811 Router. Can this router alone be enough to get what I need (VPN tunnelling for users and site to site VPN) or will I require purchasing an additional ASA appliance?

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• 426 Connection closed; transfer aborted.

  - by Jiaoziren

  Hi, I have an IIS FTP set up on Windows 2003 SP2 (S1). Everyday in the early morning, a script on another server (S2) will run and initiate FTP transfer of pulling log files from S1 to S2. The FTP client we're using is built-in FTP.exe in Windows 2000 on S2. Recently we replaced S1 with a new server however we kept the IP address. There are multiple IP addresses on new S1. Ever since the new S1 was in place, the '426 Connection closed; transfer aborted.' errors haven been occuring randomly. The log indicated that the transfer started ok however the file cannot be transferred completely, as per log below: mget access*.log 200 Type set to A. 200 PORT command successful. 150 Opening ASCII mode data connection for access02232010.log(205777167 bytes). 426 Connection closed; transfer aborted. ftp: 20454832 bytes received in 283.95Seconds 72.04Kbytes/sec. The firewall monitor suggested that the connection was setup in passive mode however I've been told that MS FTP.exe doesn't support passive mode. Though I can see the response of 'entering passive mode' from server when typing in 'quote pasv'. My network admin has told me to try the transfer in active mode however I don't know how to open active mode on client side. It's getting really frustrating. Wish someone here has the right knowledge/experience could shed me a light. Cheers.

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• What is better MS HyperV or VMWare ESX?

  - by JD

  I'm looking for a list of pros / cons to compare MS HyperV against VMWare ESX for Virtual Server hosting.

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• Postfix (SASL) / MySQL: Use MD5 Encryption?

  - by Lorren Biffin

  Is it possible to use MD5 password encryption to encrypt passwords when using Postfix / SASL and MySQL? Currently, my setup is using the MySQL CRYPT() function, which for various reasons isn't ideal.

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• Godaddy cname "@" not working (instructions from Heroku).

  - by btelles

  Hi there, I created a little app on Heroku, and am trying to follow their directions for setting up a custom domain on Godaddy. I've created a CNAME for www, but I can't create one for @ (or mydomain.com. per their instructions. I keep getting the error: ERROR - DNS Rules Violation, A record of a different type exists for this hostname, CNAME cannot be created for @ No matter which combination of dots and @'s I use. Anyone know how to add that cname with just the root domain and not the www?

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• DNS Piority in home-use Routers

  - by DucDigital

  Force DNS on router instead of ClientSide DNS like OpenDNS or GooglePublicDNS Im trying to implement some site blocking using DNS, the hardware is simple Routers like Linksys and Netgear that you use in house for family purpose. Currently I tried to set a computer to opendns, while my router set to something else, when check using opendns.com/welcome, the computer is identified as opendns. and Vice versa, this time the computer didn't identified as opendns. Is it posible to force user to use our DNS instead of their setting DNS?

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• DNS Piority in home-use Routers

  - by DucDigital

  Force DNS on router instead of ClientSide DNS like OpenDNS or GooglePublicDNS Im trying to implement some site blocking using DNS, the hardware is simple Routers like Linksys and Netgear that you use in house for family purpose. Currently I tried to set a computer to opendns, while my router set to something else, when check using opendns.com/welcome, the computer is identified as opendns. and Vice versa, this time the computer didn't identified as opendns. Is it posible to force user to use our DNS instead of their setting DNS?

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• cyrus-sasl-lib issue on CentOS 5.3 (while installing GUI)

  - by sxanness

  I am attempting to install gnome on a CentOS 5.3 Server install so that I can speed up the process that I am working on. I ran a yum groupinstall for the x window system and gnome but I keep getting the following error. Package cyrus-sasl-plain needs cyrus-sasl-lib = 2.1.22-4, this is not available. Package cyrus-sasl needs cyrus-sasl-lib = 2.1.22-4, this is not available. Package cyrus-sasl-plain needs cyrus-sasl-lib = 2.1.22-4, this is not available. Package cyrus-sasl needs cyrus-sasl-lib = 2.1.22-4, this is not available. Complete! First thing I checked was what version of the cyrus-sasl-lib I had installed. Installed Packages cyrus-sasl-lib.i386 2.1.22-4 installed cyrus-sasl-lib.x86_64 2.1.22-4 installed Available Packages cyrus-sasl-lib.x86_64 2.1.22-5.el5 base cyrus-sasl-lib.i386 2.1.22-5.el5 base Anyhow know how I can get around this and install the stuff I need so that I can start a GUI on this machine? Thanks in advance

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• IIS6.0 asking for credentials after MS Updates

  - by Adam M.

  We have an IIS6.0 Server running on a Windows 2003 Server. Last weekend it went though maintenance, and updated a quite a few Windows updates, it is now brought up to current updates (as of March 29th). Previous to these updates we could connect to the Web page via the hostname or via a alias (there is a DNS and a WINS alias (the alias is the same name in both) that are both pointing to the system). Now since the updates it asks for credentials to access the page, when trying to access the page via IP, or by name. If you use the alias it will go right into the page. I had added a new alias in DNS and tried to access it via this name with the same effect. So it appears that the WINS alias allows the page to show up properly. I have seen this KB but http://support.microsoft.com/kb/871179 though not sure if it really is relevant to this issue. As it does refer to the 3 strikes rules to display the 401.1 error. The IIS Application pool is running under a domain account. Teh default page is allowing Anonymous login under a local account. Any thoughts? Thanks Adam

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• ASP.NET Security Exception when Switch IIS7 to Use UNC Path for Content

  - by Jeremy H.

  I have a Windows Server 2008 R2 box running IIS7.5 with Medium Trust configured for ASP.NET. When I have the website running from local content (e.g.: c:\inetpub\wwwroot) everything works fine. When I change IIS to use a UNC path for the content (e.g.: \\computer\wwwroot) I get the following error: Security Exception Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. I'm trying to figure out why ASP.NET/IIS would allow for the SQL call when using local content but not when using a UNC path. Any ideas what I need to do to use a UNC path from IIS7 properly?

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• HP DL380 reboot problems

  - by dvoina

  I have recently installed RHEL 5.3 on a HP DL 380 G5. Then I installed HP's PSP(Proliant Support Pack). Since then I cannot reboot the system anymore. The system just stays in "Broadcast message from root (tty0). The system is going for reboot NOW" Neither halt, poweroff, reboot nor init 6 works.

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• Load-balancing between a Procurve switch and a server

  - by vlad

  Hello I've been searching around the web for this problem i've been having. It's similar in a way to this question: How exactly & specifically does layer 3 LACP destination address hashing work? My setup is as follows: I have a central switch, a Procurve 2510G-24, image version Y.11.16. It's the center of a star topology, there are four switches connected to it via a single gigabit link. Those switches service the users. On the central switch, I have a server with two gigabit interfaces that I want to bond together in order to achieve higher throughput, and two other servers that have single gigabit connections to the switch. The topology looks as follows: sw1 sw2 sw3 sw4 | | | | --------------------- | sw0 | --------------------- || | | srv1 srv2 srv3 The servers were running FreeBSD 8.1. On srv1 I set up a lagg interface using the lacp protocol, and on the switch I set up a trunk for the two ports using lacp as well. The switch showed that the server was a lacp partner, I could ping the server from another computer, and the server could ping other computers. If I unplugged one of the cables, the connection would keep working, so everything looked fine. Until I tested throughput. There was only one link used between srv1 and sw0. All testing was conducted with iperf, and load distribution was checked with systat -ifstat. I was looking to test the load balancing for both receive and send operations, as I want this server to be a file server. There were therefore two scenarios: iperf -s on srv1 and iperf -c on the other servers iperf -s on the other servers and iperf -c on srv1 connected to all the other servers. Every time only one link was used. If one cable was unplugged, the connections would keep going. However, once the cable was plugged back in, the load was not distributed. Each and every server is able to fill the gigabit link. In one-to-one test scenarios, iperf was reporting around 940Mbps. The CPU usage was around 20%, which means that the servers could withstand a doubling of the throughput. srv1 is a dell poweredge sc1425 with onboard intel 82541GI nics (em driver on freebsd). After troubleshooting a previous problem with vlan tagging on top of a lagg interface, it turned out that the em could not support this. So I figured that maybe something else is wrong with the em drivers and / or lagg stack, so I started up backtrack 4r2 on this same server. So srv1 now uses linux kernel 2.6.35.8. I set up a bonding interface bond0. The kernel module was loaded with option mode=4 in order to get lacp. The switch was happy with the link, I could ping to and from the server. I could even put vlans on top of the bonding interface. However, only half the problem was solved: if I used srv1 as a client to the other servers, iperf was reporting around 940Mbps for each connection, and bwm-ng showed, of course, a nice distribution of the load between the two nics; if I run the iperf server on srv1 and tried to connect with the other servers, there was no load balancing. I thought that maybe I was out of luck and the hashes for the two mac addresses of the clients were the same, so I brought in two new servers and tested with the four of them at the same time, and still nothing changed. I tried disabling and reenabling one of the links, and all that happened was the traffic switched from one link to the other and back to the first again. I also tried setting the trunk to "plain trunk mode" on the switch, and experimented with other bonding modes (roundrobin, xor, alb, tlb) but I never saw any traffic distribution. One interesting thing, though: one of the four switches is a Cisco 2950, image version 12.1(22)EA7. It has 48 10/100 ports and 2 gigabit uplinks. I have a server (call it srv4) with a 4 channel trunk connected to it (4x100), FreeBSD 8.0 release. The switch is connected to sw0 via gigabit. If I set up an iperf server on one of the servers connected to sw0 and a client on srv4, ALL 4 links are used, and iperf reports around 330Mbps. systat -ifstat shows all four interfaces are used. The cisco port-channel uses src-mac to balance the load. The HP should use both the source and destination according to the manual, so it should work as well. Could this mean there is some bug in the HP firmware? Am I doing something wrong?

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• Autologin on Ubuntu Server

  - by hekevintran

  I have a machine running Ubuntu Server. It has only a command-line interface. How can I make the system login with a specific user automatically (I don't want to type the username/password). I know that this is insecure and I don't care.

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• gmail dkim=neutral (no signature)

  - by Bretticus

  After testing much and retracing my steps, I still cannot get google mail to validate. My mail server is Debian 5.0 with exim Exim version 4.72 #1 built 31-Jul-2010 08:12:17 Copyright (c) University of Cambridge, 1995 - 2007 Berkeley DB: Berkeley DB 4.8.24: (August 14, 2009) Support for: crypteq iconv() IPv6 PAM Perl Expand_dlfunc GnuTLS move_frozen_messages Content_Scanning DKIM Old_Demime Lookups: lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmnz dnsdb dsearch ldap ldapdn ldapm mysql nis nis0 passwd pgsql sqlite Authenticators: cram_md5 cyrus_sasl dovecot plaintext spa Routers: accept dnslookup ipliteral iplookup manualroute queryprogram redirect Transports: appendfile/maildir/mailstore/mbx autoreply lmtp pipe smtp Fixed never_users: 0 Size of off_t: 8 GnuTLS compile-time version: 2.4.2 GnuTLS runtime version: 2.4.2 Configuration file is /var/lib/exim4/config.autogenerated My remote smtp transport configuration: remote_smtp: debug_print = "T: remote_smtp for $local_part@$domain" driver = smtp helo_data = mailer.mydomain.com dkim_domain = mydomain.com dkim_selector = mailer dkim_private_key = /etc/exim4/dkim/mailer.mydomain.com.key dkim_canon = relaxed .ifdef REMOTE_SMTP_HOSTS_AVOID_TLS hosts_avoid_tls = REMOTE_SMTP_HOSTS_AVOID_TLS .endif .ifdef REMOTE_SMTP_HEADERS_REWRITE headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE .endif .ifdef REMOTE_SMTP_RETURN_PATH return_path = REMOTE_SMTP_RETURN_PATH .endif .ifdef REMOTE_SMTP_HELO_FROM_DNS helo_data=REMOTE_SMTP_HELO_DATA .endif The path to my private key is correct. I see a DKIM header in my messages as they end up in my gmail account: DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mydomain.com; s=mailer; h=Content-Type:MIME-Version:Message-ID:Date:Subject:Reply-To:To:From; bh=nKgQAFyGv<snip>tg=; b=m84lyYvX6<snip>RBBqmW52m1ce2g=; However, gmail headers always report dkim=neutral (no signature): dkim=neutral (no signature) [email protected] My DNS results: dig +short txt mailer._domainkey.mydomain.com mailer._domainkey. mydomain.com descriptive text "v=DKIM1\; k=rsa\; t=y\; p=LS0tLS1CRUdJ<snip>M0RRRUJBUVV" "BQTRHTkFEQ0J<snip>GdLamdaaG" "JwaFZkai93b3<snip>laSCtCYmdsYlBrWkdqeVExN3gxN" "mpQTzF6OWJDN3hoY21LNFhaR0NjeENMR0FmOWI4Z<snip>tLQo=" Note that the base64 public key is 364 chars long so I had to break up the key using bind9. $ORIGIN _domainkey. mydomain.com. mailer TXT ("v=DKIM1; k=rsa; t=y; p=LS0tLS1CRUdJTiBQVUJM<snip>U0liM0RRRUJBUVV" "BQTRHTkFEQ0JpUUtCZ1<snip>15MGdLamdaaG" "JwaFZkai93b3lDK21MR<snip>YlBrWkdqeVExN3gxN" "mpQTzF6OWJDN3hoY21L<snip>Ci0tLS0tRU5E" "IFBVQkxJQyBLRVktLS0tLQo=") Can anyone point me in the right direction? I would really appreciate it.

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• Split horizon, route filtering, and having RIPv2 announce a non-attached route to host

  - by Paul

  Routers A, B & C live at 10.1.1.1, 10.1.1.2 and 10.1.1.3 on a /24 metro Ethernet subnet. Each router also has its own private subnet on another interface. Router B's private subnet links thru a firewall to a 10.20.20.0 network at another organization. Router B redistributes to A and C several static routes for hosts on 10.20.20.0. However, a new host 10.20.20.5/32 must be reached via a different path that goes through router C. I know that C can advertise this host-based route with no problem, but I'd like to keep all my 10.20.20.x static routes in one place. So, how can B tell A via RIPv2 to send packets for 10.20.20.5/32 to C? So far it looks like I need no ip split-horizon on router B's 10.1.1.2 interface, perhaps because B has already learned from C other routes with a next hop of 10.1.1.3. But how does RIPv2 split horizon with no auto-summary and network 10.0.0.0 really work? If B learns a route to ANY 10.x.x.x network or host from A or C, is that enough for split horizon to keep it from redistributing ip route 10.20.20.5 255.255.255.255 10.1.1.3? And if I want to suspend split horizon only for this one new host, how do I filter out the mess of regurgitated routes that B advertises when I try no ip split-horizon? Thanks much.

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