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• Apache Virtualhost entry with Windows hostname

  - by gshauger

  I have a Windows Domain Controller and we use it for DNS for our internal network. I have an Ubuntu box with an IP address of 172.16.34.149. Within the Windows DNS I created the forward and reverse lookup entries for the name Endymion. Naturally when ever I FTP/SSH/HTTP/etc to the hostname Endymion it resolves correctly to my Ubuntu box. I wanted to do some web development on this box for an existing site. There were problems when I placed the website in a subfolder of /var/www/. Let's just say it was in folder /var/www/projectx/. The issue involved the incorrect resolution of non-relative urls. So I figure I could create a new DNS entry for the hostname projectx. Sure enough when I FTP/SSH/HTTP/etc to the hostname projectx it takes me to the same ubuntu box as the hostname Endymion...this is what I would expect. I now have two hostnames for the same box. I then create a Virtualhost entry in httpd.conf that looks like the following: <VirtualHost *:80> DocumentRoot /var/www/projectx ServerName projectx ServerAlias projectx </VirtualHost> Sure enough when I go to a browser and type in http://projectx/ it takes me to the correct subfolder. Everything works!!! Not so fast. I then go to http://endymion/ and instead of taking me to /var/www/ it takes me to /var/www/projectx/ Clearly I'm missing something. Help please! ;)

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• Remote reboot of windows to knoppix

  - by user64452

  I am attempting to develop an Auditing application. This audit application will be employed on windows networks. The Audit will need to discover Hardware and software details of all machines attached to the network (including Printers) I do not want to have to install this application on each workstation. The audit app. needs to discover all the ip addresses of all the networked workstations. I have been prototyping this app for the last couple of months and have decided to try a new tack Is this possible? a). You have a windows network, min Windows XP sp3 and upwards b). Maximum of 100 Networked machines (if that matters) c). I need to remotely reboot each WINDOWS machine in turn on the entire network and get it to startup using UNIX, say knoppix for example! d). however the knoppix live cd is only available from one of the networked machines Questions... Morphology? Longevity? Incept dates? Cheers DD

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• Cant get squid proxy to work

  - by danielgratz

  i need squid proxy on my centos server. But i just can't get it to work. I did yum install squid. Here is my squid.conf file (i removed all comments): acl all src 0.0.0.0/0.0.0.0 acl manager proto cache_object acl localhost src 127.0.0.1/255.255.255.255 acl to_localhost dst 127.0.0.0/8 acl SSL_ports port 443 acl Safe_ports port 80 acl Safe_ports port 21 acl Safe_ports port 443 acl Safe_ports port 70 acl Safe_ports port 210 acl Safe_ports port 1025-65535 acl Safe_ports port 280 acl Safe_ports port 488 acl Safe_ports port 591 acl Safe_ports port 777 acl CONNECT method CONNECT acl our_networks src 192.168.1.0/24 192.168.2.0/24 http_access allow our_networks http_access allow manager localhost http_access deny manager http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow localhost http_access deny all icp_access allow all http_port 3128 hierarchy_stoplist cgi-bin ? access_log /var/log/squid/access.log squid acl QUERY urlpath_regex cgi-bin \? cache deny QUERY refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 20% 4320 acl apache rep_header Server ^Apache broken_vary_encoding allow apache coredump_dir /var/spool/squid Then i just put my server's public ip and port 3128 into my web browsers proxy settings... but it isn't working i can't visit any website. Please help. Thanks.

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• Windows 7 'Unidentified Network'

  - by Throdne

  So my internet was working last night before I went to bed and woke up to a computer that is showing unidentified network. I have tried multiple ways of fixing it. > route delete 0.0.0.0 > uninstalling drivers - restart - reinstall from downloaded drivers > ipconfig /release - /renew > static IP > speed & duplex from auto negotiation to 1.0gbps full duplex > and also changed my network address to no value to 1234567890ab (not in that order) nothing seems to work. I have Comcast internet and when I connect the computer to the modem it works perfectly. but when I connect it to my router again, Unidentified network. I know my router isn't faulty, because my macbook pro, server, NAS, iPhones, and iPads are still working. I have also tried moving the port on the router, still same problem. my router is a: Cisco Small Business RVS4000 motherboard: GIGABYTE GA-990FXA-UD3

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• mail server checklist..

  - by Jeff

  currently we ran into some issues with our mail server setup. im preparing a list of actions that we should enforce and use in order to maintain a proper email solution within our company. we have around 80 exchange users, and send mass emails out almost on a monthly bases to 20,000 + customers each time.. the checklist i currently have: 1) mcafee mxlogic 'cloud' anti-spam functionality for incoming message. 2) antivirus on each computer in company 3) antivirus on exchange and DNS servers 4) setup SPF record 5) setup DKIM 6) setup domainkey 7) setup senderID 8) submit spf to microsoft, yahoo, etc. for 'whitelist' purposes. 9) configure size limits for messages in exchange to safe numbers 10) i have 2 outside IPs for my email server, incase one gets blacklisted, switch to the backup. 11) my internet site rests on a different ip than the mail server 12) all mass emails for company sent through 3rd party company (listtrak.com) 13) setup domain alias, media, enews, and bounce for the 3rd party mass mail software. 14) verify the setup using [email protected] 15) configure group policy and our opendns.org account to prevent unwanted actions and website viewing mass emails: 1) schedule them to send different amounts at different times (1,000 at 10am, 1,000 at 4pm, 1,000 10am next day).. 2) setup user prefences, decide what they want to receive ect. ( there interests) 3) send a more steady flow of email, maybe 100 a week with top new products instead of 20,000k every other month.. if anyone has suggestions or additions/subtractions to this checklist they are greatly appreciated. thank you

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• Cannot ssh into server

  - by revolver

  I am trying to SSH into a linux machine running ubuntu, but the interactive shell stuck somewhere and I can't key in anything. I am on Mac OS X Lion. This only happens when I am trying to access via an external IP. Local LAN SSH is working perfectly. macbook:~ user$ ssh -v -v user@serverip // i skipped the rest of the log, but I can paste it here again if needed. Authenticated to serverip debug1: channel 0: new [client-session] debug2: channel 0: send open debug1: Requesting [email protected] debug1: Entering interactive session. debug2: callback start debug2: client_session2_setup: id 0 debug2: channel 0: request pty-req confirm 1 debug1: Sending environment. debug1: Sending env LC_CTYPE = UTF-8 debug2: channel 0: request env confirm 0 debug2: channel 0: request shell confirm 1 debug2: fd 3 setting TCP_NODELAY debug2: callback done debug2: channel 0: open confirm rwindow 0 rmax 32768 My terminal shell just hang after this, and I can't key in anything. I checked var/log/auth on the server and saw that the a session is being created and I had already logged in, but I don't see any responses on my client machine. I googled around and a lot of the solution had to do with the Broadcom wireless driver, but I am not even using one, so I am pretty clueless here. To give you more information, the linux machine is also running a web server, and I have no problem accessing the web server. Thanks. Any help is appreciated.

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• Window 7 image in vmware will allow network connection out but not http

  - by Ormis

  I am currently trying to create a set of images to deploy on my network, but I've run in to a snag. When I create my own Windows 7 image I can successfully use NAT for connecting to the network but whenever I try to access a webpage I get nothing. To be more specific, All firewalls/iptables are disabled on my host machine, my virtual machine, and my network. I can do lookups and all addresses respond correctly (i'm even using Google's DNS). On the host OS i have full connectivity. On the virtual machine I can ping any device I want and all addresses resolve correctly. Within a browser I cannot reach any page via hostname or IP. I feel almost like port 80 is being blocked but i can't find any reason this would be the case. If anyone has had this occur before, I would love some insight to the problem. I initially asked this on stackoverflow and now my eyes are now opened up to superuser. Thank you for any help you can provide.

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• Powershell Get-Process cannot connect to remote computer

  - by amandion

  I've been struggling with this for a few hours and can't figure this out. I have two Windows 7 computers. One is my workstation that is using Powershell to do administrative maintenance. The other is the machine I'd like to use Powershell remoting on to execute remote Powershell cmdlets on. On both computers, I've enabled Powershell remoting and added all computers to TrustedHosts with the * value. On the remote computer, I've started the Remote registry service and ensured that the DCOM, Winmgmt and the Winrm services are running. Firewall is disabled on remote machine too. The cmdlet I try to run is: Get-Process -ComputerName $name Where $name is the name of the remote machine. I keep getting an error saying that it could not connect to the remote PC. I've also tried using the IP and I get the same error. These PCs are not in a domain. I am able to do the following successfully: Invoke-Command {get-Process} -ComputerName $name -Credential $creds Where $name is the machine name and $creds is the user name and password for the remote computer's local Admin account. This gives me the same output I would expect. While this is an acceptable workaround, I am curious, why doesn't using get-process with remoting work as it should? I've seen a few articles on the web suggesting people have had success with it on its own. Each time I am using Powershell on my workstation with elevated privileges. Any ideas?

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• Thousands of visits a day from untraceable traffic to website - Serious issue

  - by kel

  At the end of January we noticed a spike in traffic to what JetPack stats says was home/archive page and what Google was classifying as going to /gaming/ which is an archive list in WordPress. This started off as ~3,000 unique visitors and jumped up to 65,000 unique visitors in one day, again all to the "home" page. This happened over a course of a couple of weeks and we thought we were getting attacked. The traffic then dropped off for a few days but then came back but came back as only about ~15,000 uniques a day and has been like that every day since. We came to the conclusion that something wasn't tracking right somewhere and this is legitimate traffic and brushed it off. Now here comes the problem, Google AdSense has just disabled our account for "invalid clicks". We are trying to figure out where this traffic is coming from and stop it if it's not legitimate or figure out a way to track it correctly. Specs for the site: Dedicated server running CentOS 6 with nginx, php-fpm and MySQL. The site is built in WordPress and we use CloudFlare and W3 Total Cache. Analytics being used are Google Analytics, Quantcast, Alexa and Compete. Any kind of help would be awesome. UPDATE: I'm finding more people with the same type of problem and there doesn't seem to be a solution. http://netmeg.com/bot-attack/ http://stkywll.com/2012/03/02/annoying-cyborgs-attach-distort-analytics/ After looking at the access logs I noticed they were all CloudFlare IP's. I looked into that and found out CloudFlare acts as a proxy and there was a way to fix the logs in nginx. They are coming from many different ISP's in the US. They are going to /games/ or /gaming/ (/games/ redirects to /gaming/) and all seem to have the same user agent of Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0).

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• Apache and Virtual Hosts Problem on OS X

  - by Charles Chadwick

  I recently formatted and installed my iMac. I am running 10.6.5. Prior to this format, I had the default Apache web server up and running with several virtual hosts, and everything ran beautifully. After formatting, I set everything back up again, and now Apache is acting funny. Here is a description of what I have going on. My default root directory for the Apache Web server is pointed to an external hard drive. In my httpd.conf, here is what I have: DocumentRoot "/Storage/Sites" Then a few lines beneath that: <Directory /> Options FollowSymLinks AllowOverride All Order deny,allow Allow from all </Directory> And then beneath that: <Directory "/Storage/Sites"> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny Allow from All </Directory> At the end of this file, I have commented out the user dir include conf file: Include /private/etc/apache2/extra/httpd-userdir.conf And uncommented the virtual hosts conf file: Include /private/etc/apache2/extra/httpd-vhosts.conf Moving on, I have the following entry in my vhosts file: <VirtualHost *:80> DocumentRoot "/Storage/Sites/mysite" ServerName mysite.dev </VirtualHost> I also have a host record in my /etc/hosts file that points mysite.dev to 127.0.0.1 (I also tried using my router IP, 192.168.1.2). The problem I am coming across is, despite having PHP files in /Storage/Sites/mysite, the server is still looking at /Storage/Sites. I know this because in the DocumentRoot contains a php file with phpinfo() (whereas the index.php file in mysite has different code). I have tried setting up other virtual hosts, but they are still doing the same thing. Also, "NameVirtualHost *:80" is in my vhosts file. I saw as a solution on another thread here. Doesn't seem to make a difference. Any ideas on this? Let me know if this is not enough information.

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• How can I rapidly switch hosts?

  - by EAMann

  I'm in the process of migrating a forum setup from one version of the software on one machine (older shared Windows host) to a new VPS (Windows Server 2008). To install the software, I used my hosts file to temporarily point the domain at the new IP address. To see the old site, I obviously re-edit the hosts file to remove the reference. But this leaves me constantly adding/removing a # from my hosts file just so I can switch back and forth between the two servers. Is there a way to do this more rapidly? I've found a handful of toggling batch scripts, but all they do is automate the addition/removal of the # character ... so there's still a noticeable lag where I have to repeatedly hit F5 to force my system to detect the new settings. Ideally, I could view both servers at the same time on the same machine. Maybe one through a regular browser session and one through some kind of a proxy. Unfortunately, I don't have the first idea how to set that up. Ideas?

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• Files showing in smbclient but not smbmount

  - by Staale

  I have a samba folder that I try and access through smbclient, and I can browse it just fine. However, mounting it through smbmount, all the folders under the share are empty. I can list the folders directly under the share fine, but they all appear empty. smbclient: # smbclient //server/share -U username -W workgroup password smbmount # sudo smbmount //server/share mntpoint -o user=username,workgroup=workgroup,password=password I have also tried with domain=workgroup instead of workgroup, both give the same result. No error messages, everything mounts fine, but all the folders under mntpoint are empty, despite the same folders being non-empty when using smbclient. Are these using different libraries? How can I debug the error? Additionally, if I try to mount //server/share/folder, doing an ls results in a segmentation fault. Using dmesg I find: kernel BUG at /build/buildd/linux-2.6.28/fs/cifs/cifs_dfs_ref.c:315! Full trace: http://pastebin.com/m70adc213 Using a credentials file, I first get empty dirs, then Resource temporarily unavailable. In my dmesg I see the following output: CIFS VFS: compose_mount_options: Failed to resolve server part of \\srv\share to IP: -11

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• Running router as virtual machine, can it be realible ?

  - by Kr1stian

  Hi all Does anyone here run their routing through virtual machine, have virtual machine setup as main router/getaway etc ? If yes, how many clients are using this kind of setup ? For those who are wondering why I'm asking this. I got assignment for my internship to create all in one "box" which would do routing and be IP PBX in one time ( only open source solutions can be used, expect RouterOS). The routing part is currently done through RouterOS and for VoIP they want to use sipXecs. RouterOS supports virtualization through KVM, but RouterOS itself only supports 2GB of memory ( and wont support more in near future). sipXecs needs allot more than 2GB. I told them that we could solve this problem by putting RouterOS as virtual machine to 64bit hostOS ( e.g. CentOS), and other virtual machine would run sipXecs. By that we would be able to use whole memory. But they told me that it's to risky to do something like that and that they need something with "enterprise stability/reliability". I told them that we could make redundant image of each VM which would automatically start if one VM stop's working, but I was told the same thing. So this is why I asked those question above, to see if I really suggested something that's not good to do, or maybe this is something completely normal and it can be done with "enterprise stability/reliability" :) Thank you for answers, Kristian

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• Mail Server using Postfix

  - by unknown (google)

  I have currently set up my web application on Amazon EC2 server. As a well known fact sending email from EC2 has a problem. As a cheap and long lasting solution instead of using "authsmtp" is it possible to rent a server and use it as a Mail Server? I am currently looking for cheap hosting which will give me root access so that it can be configured and used as a relayhost. I am curently using Postfix as MTA. Has any one implemented this before? I am curious about its feasibility of this solution. I guess common requirements are: 1: Dedicated IP which is not black listed. 2: Open relay( open to my Server only) Any Tips for Header configurations to keep the mails out of spam folder. This is like exactly cloning authsmtp for personal use. Any suggestions for other Mail Server software instead of Postfix? Another problem is Reverse DNS for this server. Should PTR entry be present if a server is used as a relayhost?

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• Why does my router log crazy amounts of blocked traffic on port 1701?

  - by Vlad Seghete

  I have a 2701HGV-B 2Wire modem and router (AT&T). The log is basically full with entries similar to the following with a time between a fifth and a third of a second between entries: src=86.156.7.170 dst=xxx.xxx.xxx.38 ipprot=17 sport=6882 dport=1701 Unknown inbound session stopped src=58.176.22.252 dst=xxx.xxx.xxx.38 ipprot=17 sport=21573 dport=1701 Unknown inbound session stopped src=91.221.6.250 dst=xxx.xxx.xxx.38 ipprot=17 sport=25902 dport=1701 Unknown inbound session stopped ... where the source IP will be different for every entry. The entries accumulate constantly, every single second that the router is on several of them appear in the log. The destination is the WAN address for my router. I understand that this is somehow related to VNCs, but I don't know enough to figure out why my router is getting bombarded with requests for a VNC session. Is there anything fishy going on or is this normal? If it is normal, how do I keep these entries from spamming my log files? Since there's about two or three of them every second, everything else gets drowned out.

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• Exchange on SBS2003 not receiving mail, but sending via telnet works

  - by YDdraigLas

  Last week we had a problem on our SBS2003 server where our external connection dropped out and I was only able to restore it by running netsh winsock reset catalog and netsh int ip reset. Thinking all was well, I went home for the weekend and came in today to find that we haven't received any external emails since before the original problems occurred. There are plenty of examples of this on the internet, usually to do with a firewall issue, but the odd thing here is that when I connect using telnet I can send an email and it goes straight through and into my inbox. When I send an email from Gmail or Hotmail nothing comes through at all. Internal emails are also unaffected, as are outgoing emails. There have also been a couple of emails that have come through for other users, both out-of-office replies, if that's relevant. I've run the CEICW several times, checked all the NIC settings, but no joy. Before I give up trying to fix this and reinstall the whole server, has anyone come across this problem before? I have only found fleeting references to this in previous searches and no real answers. Any advice gratefully received.

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• How can I generate filesystem images that are usable on many different virtualization systems?

  - by Mark Longair

  I have written a script that generates a root filesystem image (based on Debian lenny) suitable for User-Mode Linux. (Essentially this script creates a filesystem image, mounts it with a loop device, uses debootstrap to create a lenny install, sets up a static IP for TUN/TAP networking, adds public keys for login by SSH and installs a web application.) These filesystem images work pretty well with UML, but it would be nice to be able to generate similar images that people can use on alternative virtualization software, and I'm not familiar with these options at all. In particular, since the idea is to use this image as a standalone server for testing the web application, it's important that the networking works. I wonder if anyone can suggest what would be involved in customizing such root filesystem images such that they could be used with other virtualization software, such as VMware, Xen or as an Amazon EC2 instance? Two particular concerns are: If such systems don't use a raw filesystem image (e.g. they need headers with metadata or are compressed in some particular way) do there exist tools to convert between the different formats? I assume that in the filesystem, at least /etc/network/interfaces will have to be customized, but are more involved changes likely to be necessary? Many thanks for any suggestions...

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• Why can't I ping a PC on my home network?

  - by AngryHacker

  Whenever I try to ping another box on my home network, it pings the wrong ip address: C:\Users\Papa>ping macmini Pinging macmini.belkin [208.68.143.55] with 32 bytes of data: Reply from 208.68.143.55: bytes=32 time=50ms TTL=110 As you can see it always appends belkin to anything I try to ping. So I hit up ipconfig and belkin happens to be Connection-specific DNS Suffix: Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : belkin IPv4 Address. . . . . . . . . . . : 192.168.2.7 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.2.1 My setup is all DHCP, so I am not sure where belkin is coming from. I looked through all the networking stuff, as you can see below: Bottom line: how do I fix this?

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• No outbound internet connection after restarting CentOS 6.3

  - by wnstnsmth

  After restarting a headless CentOS 6.3 machine, it lost outbound internet connectivity, i.e. I can still connect to the server via SSH (ssh root@**.126.18.56), but stuff such as ping google.com gives google.com: unknown host, and yum list some_package gives a lot of network errors. This is what ifconfig gives: eth0 Link encap:Ethernet HWaddr 00:25:90:78:2D:5D inet addr:**.126.18.56 Bcast:**.126.18.255 Mask:255.255.255.0 inet6 addr: fe80::225:90ff:fe78:2d5d/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:75594 errors:0 dropped:0 overruns:0 frame:0 TX packets:787 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7074741 (6.7 MiB) TX bytes:144391 (141.0 KiB) Interrupt:20 Memory:f7a00000-f7a20000 eth1 Link encap:Ethernet HWaddr 00:25:90:78:2D:5C UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:16 Memory:f7900000-f7920000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:6 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:504 (504.0 b) TX bytes:504 (504.0 b) I have absolutely no clue how to debug this, and I find it very strange since I can still connect via ssh. EDIT: Weirdly, /etc/resolv.conf does not contain any entries, or none that I can make sense of: # Generated by NetworkManager search sui-inter.net # No nameservers found; try putting DNS servers into your # ifcfg files in /etc/sysconfig/network-scripts like so: # # DNS1=xxx.xxx.xxx.xxx # DNS2=xxx.xxx.xxx.xxx # DOMAIN=lab.foo.com bar.foo.com So is it possible that rebooting the server erased that file? It worked before at least! And how do I solve this? By the way, pinging an IP address works.

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• Portforwarding Combine Several Ports

  - by kiraitachi

  Hi I got a Raspberry Pi at A.A.A.B in my local network and I have set up a DMZ on my router so that any incoming traffic that comes to my router gets redirected to my raspberry pi wich I can connect via NO-IP adress. The problem is that I want to set up portforwarding since i got several services running on my Pi like SSH, torrent webgui, webalbum, etc. I had this already done before long time ago, but I forgot a bit the syntax and cant get to set it up. Router Help says: The Application allows you to do port forwarding, but only have the ports open when data flowing out of the trigger ports. When a program sends data out on outgoing ports called trigger ports, the device then allows incoming data on the open ports specified in your port triggering configuration. 1.Trigger Port Start Trigger Port Start Specify the start port on the device that would trigger the device to open ports for incoming data. 2.Trigger Port End Specify the end port on the device that would trigger the device to open ports for incoming data. You can enter a port number the same as the trigger port start or enter a larger port number to specify a port range. 3.Trigger Traffic Protocol Type Select the trigger traffic type. Open Port Specify all the ports to be opened. It's content could be: A single port only. A port range only. Start open port number and end port number should be separated by "-" . Combined several single port and several port ranges. Each single port or port range should be separated by "," . Open Traffic Protocol Type Select the open traffic type. This are the fields: http://es.tinypic.com/view.php?pic=n5lv1k&s=8 I think this is the syntax 1-7999,8001-9090,9092-65535. But each time I want to add it gives me an error. Any ideas?

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• SSH hangs when executing command remotely

  - by Serty Oan

  Client : OpenSSH_5.1p1 Debian-5ubuntu1 (Ubuntu 9.04) Server : OpenSSH_5.1p1 Debian-5 (Proxmox 2.6.24-7-pve) I use SSH to execute commands remotely on the server (module check_by_ssh of Nagios). But SSH hangs from time to time when trying to execute commands. I can log to the server via SSH but not executing a simple 'ls'. And it seems to block from all clients from the same IP address. Authentication is not the problem, may it be made by SSH keys or password. ssh -l root -p 2222 server.domain.tld 'ls' Here the client debug info debug1: Entering interactive session. debug2: callback start debug2: client_session2_setup: id 0 debug1: Sending environment. debug3: Ignored env ORBIT_SOCKETDIR *** skipping approx 40 env var ignored debug1: Sending command: ls debug2: channel 0: request exec confirm 1 It hangs there. Then after a random time, it works again (without doing anything). Killing all sshd process on the server seems to work too. It works from a Putty. I saw that some people had trouble like this due to ISP reverse DNS problem, but it does not seem to be the case here. It can work for hours and then not work for half an hour or so. What could explain this behaviour ?

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• VOIP and internet connection speeds [cable vs. fiber]

  - by microchasm

  Our office is migrating to IP telephony. We have less than 10 employees that will be using the phones. We currently have cable internet, and they just bumped the speeds: There is a data center that was just recently built in our building, and we were considering co-lo'ing there in the near future. As a result, they offered us access to their triple-redundant internet, but it's quite expensive. They are offering 3mbps committed with up to 10mbps burst for $250/month (discounted). We pay ~$120 for our cable (which the plan was to keep--at least for TV). I want the phone system and LAN to be as separate as possible. Was thinking about keeping the cable for LAN, and using the other connection for the phones (until I saw the price). Now I'm thinking it might make sense to add on to our existing cable setup, and change our phone to only have DSL as a backup for the cable. Is there any real benefit to the fiber? Especially for the price? Any other suggestions or ideas? Thanks.

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• Enterprise Redirection Services?

  - by Aaron Alton

  This is probably a case of "if I new what it was called, I could google it in 5 minutes" - but I don't know what it's called. It's probably best to explain the requirement using an example. We have a number of services (vpn, owa, etc) which we host from one of our datacenters. We have a number of datacenters, and we technically have the infrastructure already in place to support these services at a number of our datacenters. To provide access to these "services", I would create an external DNS entry (ex. VPN.MyCompany.com Gateway IP for one of my DCs), and clients will connect to it via the DNS entry. Since I have multiple datacenters that can support this service, I could theoretically offer a "highly available, geographically dispersed" solution if I could point this DNS entry to some sort of third party who offers highly available "redirection" services. If my primary site goes down, I could just make a change via some management console and configure the redirector to point to a different DC. Of course, it would be fairly straightforward to set this sort of thing up on one of our servers, but that would kinda defeat the purpose of a highly available third party. Is anyone familiar with a service like this? I'm thinking something like DynDNS, but with Enterprise availability guarantees.

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• RewriteRule causes POST data to get dumped before I can access it

  - by MatthewMcGovern

  I'm currently setting up my own 'webserver' (a Ubuntu Server on some old hardware) so I can have a mess around with PHP and get some experience managing a server. I'm using my own little MVC framework and I've hit a snag... In order for all requests to make it through the dispatcher, I am using: <Directory /var/www/> RewriteEngine On RewriteCond %{REQUEST_URI} !\.(png|jpg|jpeg|bmp|gif|css|js)$ [NC] RewriteRule . HomeProjects/index.php [L] </Directory> Which works great. I read on Stackoverflow to change the [L] to [P] to preserve post data. However, this causes every page to return: Not Found The requested URL <url> was not found on this server. So after some more searching, I found, "Note that you need to enable the proxy module, and the proxy_http_module in the config files for this to work." The problem is, I have no idea how to do this and everything I google has people using examples with virtual hosts and I don't know how to 'translate' that into something useful for my setup. I'm accessing my webserver via my public IP and forwarding traffic on port 80 to the web server (like I'm pretending I have a domain/server). How can I get this enabled/get post data working again? Edit: When I use the following, the server never responds and the page loads indefinately? LoadModule proxy_module /usr/lib/apache2/modules/mod_proxy.so LoadModule proxy_http_module /usr/lib/apache2/modules/mod_proxy_http.so <Directory /var/www/> RewriteEngine On RewriteCond %{HTTP_REFERER} !^http://(.+\.)?82\.6\.150\.51/ [NC] RewriteRule .*\.(jpe?g|gif|bmp|png|jpg)$ /no-hotlink.png [L] RewriteCond %{REQUEST_URI} !\.(png|jpg|jpeg|bmp|gif|css|js)$ [NC] RewriteRule . HomeProjects/index.php [P] </Directory>

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• VPN: Disable class based route addition for Windows XP/Vista

  - by brgsousa

  Paraphrasing this SuperUser link: When you set up a VPN, the Windows default is to enable "Use default gateway on remote network." A new default route is added to the routing table pointing to the remote network's gateway, and the existing default route has its metric increased to force all Internet traffic to traverse the tunnel and use the remote network's gateway. All traffic uses the VPN, and traffic destined for the outside world is directed to the remote gateway. When the VPN drops, the route to the remote gateway is removed and the original default route is set back to the original metric. Unchecking "use default gateway on remote network" means that new default route isn't added, so Internet traffic goes out the local gateway, but a new classful route is added to the routing table, using the local adapter's IP, pointing down the VPN. Only traffic destined for the classful network of the local adapter goes down the VPN. This may not be what you want. Checking "Disable class based route addition" means that classful route isn't added to your machine when the VPN starts up, and you'll need to add the appropriate routes for networks that should be routed through the tunnel. But, the option "Disable class based route addition" is available ONLY for Windows 7. How can I do something like that for Windows XP or Vista since they don't have that option? I have searched about for that but, no solution yet.

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