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• postfix destination concurrency

  - by Hamlet

  Hi, I have a website sending email using phpmailer - Centos, postfix, php, mysql etc Emails are getting delivered to all hosts correctly except one. Mar 30 14:38:22 server postfix/qmgr[15467]: 7237D218852D: to=, relay=none, delay=0.04, delays=0.04/0.01/0/0, dsn=4.4.2, status=deferred (delivery temporarily suspended: lost connection with mail06.indamail.hu[91.83.45.46] while sending MAIL FROM) They told me to limit concurrent connections to 2 to their server. I did, but they still say I connect more than twice. main.cf: default_destination_concurrency_limit = 1 fallback_relay = smtp_destination_concurrency_limit = 1 initial_destination_concurrency = 1 Any ideas? Thanks, Hamlet

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• Deploy virtual PC based on snapshot using Hyper-V

  - by user27786

  I have a server with Hyper-V configured, it is easy to create a new virtual machine using the management tools, but it can take some time. I often see those hosts that say "We can have your server ready in 5 seconds". And I wonder how do they manage this? I would also like to deploy a full functional clean server in 5 seconds. So how is this done? Is it by first installing a clean server, then take a snapshot of that for later to deploy a new server based on that snapshot? I tried doing this, but I did not find any where to install a new virtual machine based on the snapshot. Anyone got any thoughts to share on this?

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• How can I view my IIS hosted sites on other machines on my network

  - by Truegilly

  Hello, at home i have a simple network setup conatining 2 machines and 1 belkin router. On one machine i have a site hosted with IIS7. Rather than the standard localhost/index.htm address i have added an entry in the HOSTS file pointing the local ip (127.0.0.1) to this domain - www.mysite.dev. i can access the site with www.mysite.dev with no problem. what i would like to do is be able to view this site from my other machine on the network. initially i assumed this could be done with a url like so MACHINE-NAME/www.mysite.dev, but the connection always times out. But I can ping MACHINE-NAME without problems. For testing purposes i have diabled the windows firewall on both machines but to no joy. Like a typical web developer, my techy/network skills are pretty poor. Can anyone see where im going wrong ?? thank you for your time Truegilly :)

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• Apache2 configuration, .htacces and 310 error (www redirection)

  - by allstat

  I have an ubuntu apache serveur, with many websites. all my website have the same bug ( so it's look like a misconfiguration) http://www.2sigma.fr <- it's work fine ( we see "en travaux") http://2sigma.fr <- dont work, i got 310 error (cyclic redirection!) here my .htaccess Options +FollowSymlinks RewriteEngine on RewriteCond %{HTTP_HOST} ^2sigma\.fr$ RewriteRule ^(.*) http://www.2sigma.fr/$1 [R=301,L] here my confguration <VirtualHost *:80> <IfModule mpm_itk_module> AssignUserId sigma www-data </IfModule> ServerAdmin [email protected] ServerName 2sigma.fr ServerAlias www.2sigma.fr DocumentRoot /home/sigma/www <Directory /> Options FollowSymLinks AllowOverride All </Directory> <Directory /home/sigma/www> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Directory> ErrorLog /var/log/apache2/error_sigma # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access_sigma combined ServerSignature Off If i use this .htaccess it's work fine : Options +FollowSymlinks RewriteEngine on RewriteCond %{HTTP_HOST} ^2sigma\.fr$ RewriteRule ^(.*) http://www.google.fr/$1 [R=301,L] I think that it is a apache configuration probleme... but i dont kno how to solve it. Thanks for your help

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• Would it be smarter to setup a Linux development server at home, or to use a hosted server?

  - by markle976

  I am in the process of learning as much as I can about LAMP. I was wondering if I should set a web server on my home network, or use a service like Rackspace (cloud space)? I need to have root access, to be able to access it remotely via SSH/FTP/HTTP, and to be able to install things like subversion, etc. I currently have Comcast so I have plenty of bandwidth, but I am not sure if this would violate the TOS, and/or compromise the security of my home network. Pricing for these cloud hosts, seems reasonable ($11 per month plus about $0.10 per GB of bandwidth), but I am not sure if I will have to control I am looking for.

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• Apache + PHP via FastCGI

  - by Wilco

  I'm running into some problems while attempting to run PHP via FastCGI in Apache. I have the FastCGI module loaded, but get the following error when attempting to load a page: The requested URL /fastcgi/php54.fcgi/index.php was not found on this server. Somewhere, it seems that the script to be executed is appended to the executable without any spaces. Is this where the problem likely is? Below I've included snippets from my Apache configuration (hopefully this is enough): LoadModule fastcgi_module libexec/apache2/mod_fastcgi.so FastCgiIpcDir /var/run/fastcgi AddHandler fastcgi-script .fcgi FastCgiConfig -autoUpdate -singleThreshold 100 -killInterval 300 AddType application/x-httpd-php .php ScriptAlias /fastcgi/ /Library/WebServer/FCGI-Executables/ <Directory "/Library/WebServer/FCGI-Executables"> Options +ExecCGI SetHandler fastcgi-script Order allow,deny Allow from all <VirtualHost *:80> ServerName www.somedomain.com ServerAdmin [email protected] DocumentRoot "/Web/www.somedomain.com" DirectoryIndex index.html index.php default.html CustomLog /var/log/apache2/access_log combinedvhost ErrorLog /var/log/apache2/error_log Action application/x-httpd-php /fastcgi/php54.fcgi <IfModule mod_ssl.c> SSLEngine Off SSLCipherSuite "ALL:!aNULL:!ADH:!eNULL:!LOW:!EXP:RC4+RSA:+HIGH:+MEDIUM" SSLProtocol -ALL +SSLv3 +TLSv1 SSLProxyEngine On SSLProxyProtocol -ALL +SSLv3 +TLSv1 </IfModule> <Directory "/Web/www.somedomain.com"> Options All -Indexes +ExecCGI +Includes +MultiViews AllowOverride All <IfModule mod_dav.c> DAV Off </IfModule> <IfDefine !WEBSERVICE_ON> Deny from all ErrorDocument 403 /customerror/websitesoff403.html </IfDefine> </Directory> </VirtualHost> ... and this is the executable: #!/bin/sh PHP_FCGI_CHILDREN=1 PHP_FCGI_MAX_REQUESTS=5000 export PHP_FCGI_CHILDREN export PHP_FCGI_MAX_REQUESTS exec /opt/local/bin/php-cgi54

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• Cannot WMI Query root\MSCluster namespace as Local Admin

  - by Matt Zuberko

  I'm trying to use WMI Explorer to query the root\MSCluster namespace on various hosts to obtain cluster resource group and resource object data. I can access the namespace with no issue on Win2K3 cluster nodes but am getting an access denied error attempting to connect to Win2K8 and Win2K8R2 nodes. I can access the root\cimv2 namespace with no issue, just the MSCluster namespace even though I am a local Admin. Is there a feature setting, local security policy or server role I have to be a member of to access the namespace? Thank you!

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• simple apache2 reverse proxy setup not working

  - by Nick

  I know what proxy is (very high level), it's just I have never set up one, and it feels like I might be missing some big fat point here. My setup: client server (static IP), runs apache on port 80 proxy (has 2 network cards, one is on the clients network, the other one with a static IP on the server network), runs apache on port 80 I am trying to configure these three machines so that when client requests: http://proxy/machine1 It gets served server's pages at server root URL, i.e. http://server/ I can access client pages just fine. However, when I try accessing a page from the client machine, it simply gets redirected to server's IP address, which it clearly can't access since they are not on the same network: ... <meta http-equiv="REFRESH" content="0;url=http://server/machine1"></meta> <title>Redirect</title> ... My apache2 config is: LoadModule proxy_module /modules/mod_proxy.so LoadModule proxy_http_module /modules/mod_proxy_http.so ProxyRequests off <Proxy *> Order Allow,Deny Allow from all </Proxy> ProxyPass /machine1 http://server:80 <Location /machine1> ProxyPassReverse / </Location> What gives? Thanks!

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• Can't access some websites with any browser

  - by Charles Kingsmill

  I'm running Windows 7 64-bit on a new Samsung laptop and accessing the internet okay via ethernet cable to my university's ISP. Some sites work fine (e.g. google.com) but I can't access others at all (microsoft.com, topshop.com). I can't connect to those sites in safe mode with networking. And ping and tracert both fail. There's no proxy. Other users can connect successfully to these sites using my cable and socket. I've tried all the following with no success: using various browsers (IE9, FF, Chrome) creating a new user updating drivers clearing the DNS cache using OpenDNS and Google's DNS turning off Avast tweaking the MTU running MS malicious software removal tool running Spybot S&D reviewing the hosts file disabling the IPv6 options repairing / resetting winsock settings disabling advanced javascript options I have run out of ideas... can anyone see anything I've missed??!

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• How to access website on localhost from internet?

  - by Nitesh Panchal

  Hello, I turned my pc into router by allowing port forwarding on port 80 and got my hostname(xyz.donexist.org) registered through dyndns.com. Now i when i type my public ip address in browser i get redirected to my browser. I have installed glassfish and have my website deployed in glassfish. I want that when i type xyz.donexist.org my website should be opened. What all steps more i need to take? I have made a entry in etc/hosts file as :- 127.0.0.1 xyz.donexist.org Please guide me. I am and beginner. Thanks in advance :)

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• How To Perform Distributed Website Monitoring?

  - by cballou

  I would like to know how sites like the following perform distributed website monitoring (from multiple checkpoints/countries). pingdom.com, site24x7.com, uptrends.com, siteuptime.com, etc, etc. To be exact, what process would occur in checking if a given domain name went down? If the server finds that the site is down, what is the next step? Would it make a REST API request to a separate server to run the same test and report the results? I have a few theories, including: utilizing host(s) from different countries utilizing proxies from different countries I'm looking for the most proper or correct way to handle this, which can include the usage of servers from multiple countries/hosts.

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• Strange Inode/Ram cache drops happening in CentOS

  - by FunkyChicken

  I run a CentOS 5.7 machine (64bit) with 24GB ram and 4x SAS drives in RAID10 setup. This machine runs nginx/1.0.10, php-fpm & xcache. About a month back the RAM usage of this machine has changed. About every few hours the 'CACHE' is flushed from the RAM, this happens exactly when the 'Inode table usage' drops. I'm pretty sure these drops are related. (see the 2 attached images). This server hosts quite a lot of small files (20M all a few KB big). Not many files are deleted (maybe 100 per hour (total size a few MB max)), not enough to account for the huge Inode table drops. I also have no crons running which could cause these drops. Sar -r output: http://pastebin.com/C4D0B79i My question: Why are these huge RAM/Inode usage drops happening? How can I get Nginx/PHP to use all of my servers RAM?

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• Block a URL at browser level

  - by Farseeker

  Does anyone have a solution (that doesn't involve editing the hosts file) to block a particular URL from FireFox? Basic back story is that I'm trying to discipline myself. I'm spending FAR too much time over at Server Fault that I want to genuinely block the site from my work PC so that every time I find myself flicking to it during work time I can't see it, but I'd like to be able to disable it during my lunch break. (So I only spend 40 minutes a day there, rather than 4 hours). That said I don't want to block it at the router, nor for anyone else.

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• Debian, Apache2, CGI: paths issue

  - by Bubnoff

  I have a perl form email script on the servers cgi-bin directory ( /usr/lib/cgi-bin ). /etc/apache2/sites-enabled/000-default ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch AddHandler cgi-script cgi pl Order allow,deny Allow from all </Directory> The issue is with paths. html calls script here: <form name="Request" method="post" action="http://server-test.local/cgi-bin/formprocessorpro.pl" onsubmit="return checkWholeForm49874(this)"> The directory with the templates and configs is passed here: <input type="hidden" name="base_path" value="../contact" /> The path to this form is: http://server-test.local/formstest/contact.htm No matter what variation I try for the base_path I get an error from the formprocessor script that it can't find the directory: An error occurred when opening the Form Configuration File (../contact/form.cfg): No such file or directory. I need to move this script from an old server, configured by a previous sysadmin, to a new server. Since cgi-bin is automatically linked to /usr/lib/cgi-bin and linked such that the script resides: http://server-test.local/cgi-bin/formprocessorpro.pl I would imagine that, given that the templates are in the webroot in a directory called contact, the correct path would be: ../contact Any ideas? It's been awhile since I've messed with CGI. Bubnoff

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• Resize Ubuntu Linux system to smaller disk inside VMware ESXi

  - by mlambie

  I have several Ubuntu Linux virtual machines running on VMware ESXi hosts that have all been allocated disks much larger than their required capacity. As space is now becoming an issue on our SAN, I'd like to investigate downsizing the allocated disk space on these machines. All systems will be completely backed up imaged before I begin making changes, and I will always retain a pristine backup in case the partition resizing does not work. Is there an easier way than the following procedure, or is their a better solution entirely? Shutdown and assign a second disk to the virtual machine Boot using the SystemRescueCD Use GParted to resize the original (source) partition, making it smaller Clone the new, smaller partition to the second disk Shutdown and remove initial disk from the virtual machine Reboot and force fsck to check the filesystem

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• Block access to certain websites from other computers on shared internet connection

  - by Dheeraj V.S.

  I have very little knowledge about networking. I have an internet connection on my PC (running Windows XP). I've enabled internet connection sharing to other computers on my network connected using a WIFI router. I want to block use of GMail (in general, specific domains) from other computers, but should be able to access them from my own machine. I can't edit my hosts file because my machine too would lose access. I guess I need to configure my wireless router for that. But I have no idea how to do so. My wireless router is a Zyxel P-660HW-T1 v2. I'd appreciate any pointers.

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• Drbd Primary/Primary + iSCSI: accessing to different files avoids split brain?

  - by Eddie C.

  I have a question / curiosity about split-brain on a Drbd Primary/Primary configuration. Supposing two nodes (hosts), host1 and host2 configured with Drbd Primary/Primary and two different shares (NFS, CIFS o iSCSI) of a replicated area (saying /drbd) /drbd/file1.data /drbd/file2.data If a pool of client would access only by host1 share reading and wrinting only file1.data and another pool only by host2 share to file2.data, this scenario should avoid split brain situation in case of one node failure or it's just a conjecture? The final purpose is load balance between the two nodes in normal condition and collapsing to one node only in case of failure. Thank you! Eddie

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• Simulating an UNC path with a leading dot

  - by Uwe Keim

  Being a C# .NET Windows Forms developer, some customers are running our applications on an Apple OS X Mac inside a Parallels virtual machine. Parallels presents host folders to the guest Windows as UNC paths with a leading dot like \\.psf\Home\Some\More\Folders Now an application of us cannot handle the leading dot correctly when accessing files from these kind of shares ("Invalid URI, cannot analyze host name" exception). I want to debug and fix this issue, unfortunately I do have no Mac and Parallels around here to test it. My question is: Is there a way to "simulate" this kind of share on a normal Windows server or client so that I'll be able to debug my application with Visual Studio? What I tried so far: I already tried to edit my HOSTS file to contain an entry like # ... 127.0.0.1 .psf # ... but Windows just seems to not recognize the share at all.

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• Setting kernel memory for installing postgresql

  - by Matthieu Taymans

  My question is about setting the kernel shared memory for installing postgresql on mac osx 10.6.8. In the readme file of postgresql it is said: Shared Memory PostgreSQL uses shared memory extensively for caching and inter-process communication. Unfortunately, the default configuration of Mac OS X does not allow suitable amounts of shared memory to be created to run the database server. Before running the installation, please ensure that your system is configured to allow the use of larger amounts of shared memory. Note that this does not 'reserve' any memory so it is safe to configure much higher values than you might initially need. You can do this by editting the file /etc/sysctl.conf - e.g. % sudo vi /etc/sysctl.conf On a MacBook Pro with 2GB of RAM, the author's sysctl.conf contains: kern.sysv.shmmax=1610612736 kern.sysv.shmall=393216 kern.sysv.shmmin=1 kern.sysv.shmmni=32 kern.sysv.shmseg=8 kern.maxprocperuid=512 kern.maxproc=2048 Note that (kern.sysv.shmall * 4096) should be greater than or equal to kern.sysv.shmmax. kern.sysv.shmmax must also be a multiple of 4096. Once you have edited (or created) the file, reboot before continuing with the installation. If you wish to check the settings currently being used by the kernel, you can use the sysctl utility: % sysctl -a The database server can now be installed. I'm a real beginner with all this but need to instal postgresql for academic purposes do you know how i can set this kernel shared memory. Won't that be harmful for my system? Thank you in advance. Matthieu

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• MinGW MSYS ssh error: Could not create directory '/home/<username>/.ssh'

  - by SoldOut

  I have just installed a fresh MinGW installation on Windows 7 64bit using the Graphical User Interface Installer (the recommended approach) following the instructions given here and keeping the default options (i.e. installation in C:\MinGW) - hopefully without missing any steps or messing things up in any way. However, when running the ssh command, I get the following error: C:\Users\Diablossh username@host Could not create directory '/home/username/.ssh'. The authenticity of host 'username@host (host ip here)' can't be established. RSA key fingerprint is (fingerprint here). Are you sure you want to continue connecting (yes/no)? yes Failed to add the host to the list of known hosts (/home/username/.ssh/known_hosts). So, I basically have to confirm the connection every time. Why does this happen and how do I fix it?

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• Reporting Services 2008 R2 export to PDF embedded fonts not shown

  - by Gabriel Guimarães

  Hi, I have installed a font on the server that hosts Reporting Services 2008 R2, after that I've restarted the SSRS service, and sucessfully deployed a report with a custom font. I can see it using the font on the web, when I export it to Excel, however on PDF the font is not visible. If I click on File - Properties - Fonts. I'm presented with a screen that shows me a list of fonts on the PDF. There's an a icon with Helvetica-BoldOblique Type: Type 1 Encoding: Ansi Actual Font: Arial-BoldItalicMT Actual Font Type: TrueType The second one is a double T icon with the font I'm using and a (Embedded Subset) sufix. Its a True Type font and ANSI encoded. However the text is not using this embeded font, If I select the text and copy to a word document (I have the font installed) I can see the text in the font, however not on PDF, what's wrong here?

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• Why apache throws 403 on index file after install?

  - by den-javamaniac

  Hi. I've just installed apache and php from sources using next commands: ./configure --prefix="/mnt/workspace/servers/web/apache-2.2.17" \ --enable-info --enable-rewrite --enable-usertrack --enable-mime-magic for apache and ./configure --with-apxs2=/mnt/workspace/servers/web/apache-2.2.17/bin/apxs \ --prefix=/mnt/workspace/servers/web/apache-2.2.17/php \ --with-config-file-path=/mnt/workspace/servers/web/apache-2.2.17/php \ --with-mysql=mysqlnd for php. After adjusting configuration (httpd.conf) and starting apache it gives a 403 response on http://localhost:8060/index.html (presuming that 8060 is used) request. There are next directory settings in httpd.conf: <Directory "/mnt/workspace/servers/web/apache-2.2.17/htdocs"> ... Order allow,deny Allow from all ... </Directory> <IfModule dir_module> DirectoryIndex index.html index.php </IfModule> It should be noted that I've got apache on a mounted (default auto mount configured while installing ubuntu) partition. Log Files Access log: ::1 - - [12/Feb/2011:17:48:30 +0200] "GET / HTTP/1.1" 403 202 ::1 - - [12/Feb/2011:17:48:31 +0200] "GET /favicon.ico HTTP/1.1" 403 213 ::1 - - [12/Feb/2011:17:48:48 +0200] "GET /index.html HTTP/1.1" 403 212 ::1 - - [12/Feb/2011:17:48:48 +0200] "GET /favicon.ico HTTP/1.1" 403 213 ::1 - - [12/Feb/2011:17:49:03 +0200] "GET /index.html HTTP/1.1" 403 212 ::1 - - [12/Feb/2011:17:49:03 +0200] "GET /favicon.ico HTTP/1.1" 403 213 Error log: [Sat Feb 12 18:59:13 2011] [notice] Apache/2.2.17 (Unix) PHP/5.3.5 configured -- resuming normal operations [Sat Feb 12 18:59:22 2011] [error] [client ::1] (13)Permission denied: access to / denied [Sat Feb 12 18:59:22 2011] [error] [client ::1] (13)Permission denied: access to /favicon.ico denied [Sat Feb 12 18:59:36 2011] [error] [client ::1] (13)Permission denied: access to /index.html denied

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• fail2ban and denyhosts constantly ban me on Ubuntu

  - by Trey Parkman

  I just got an Ubuntu instance on Linode. To secure the SSH on it, I installed fail2ban (using apt-get), but then had a problem: fail2ban kept banning my IP (for limited durations, thankfully) even though I was entering the correct password. So I removed fail2ban and installed denyhosts instead. Same problem, but more severe: It seems like every time I SSH in, my IP gets banned. I remove it from /etc/hosts.deny, restart denyhosts and log in again, and my IP gets banned again. The only explanation I can think of is that I've been SSH-ing in as root (yes, yes, I know); maybe something is set somewhere that blocks anyone who SSH-es in as root, even if they log in successfully? This seems bizarre to me. Any ideas? (Whitelisting my IP is a temporary fix. I don't want to only be able to log on from one IP.)

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• Allowing XP Home Clients To Access Active Directory Printers

  - by Sean M

  My school's network is based on Active Directory on Windows Server 2003 servers. Most of the computers in the school are members of the domain. However, we also acquired a passel of netbooks that are running Windows XP Home (as netbooks tend to), and we're trying to make those useful. The netbooks are made available to students by check-out, so none of them are dedicated to a specific user. I only want to allow the netbooks to do two significant network activities: to access the Internet (this is working acceptably well so far), and to print to one or more printers on the network. That second one is where trouble starts. I'm trying to find a way to allow the XP Home clients to access those Active Directory printers. All the solutions that I can come up with right now are expensive, ugly, or both - for example, changing the OS on the netbooks (even with imaging, that would take a lot of my time) or making sure that the user account on each netbook has a matching account in Active Directory with permissions for printing (invites security/maintainability disaster). Are there any elegant solutions? Failing that, what's the best ugly solution for allowing my students to print from the netbooks?

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• How to automatically restart RRAS service after OpenVPN

  - by JT

  I have OpenVPN set up on a Windows Server 2003 box using a routed configuration. This allows users to connect and access the work LAN subnet. There are remote hosts/services however that are only accessible when used via the work network. To enable access these, I push routes out to the clients to make sure traffic to these destinations goes across the VPN, and NAT the traffic using RRAS. This all works, except: if I restart the OpenVPN service, network traffic stops working until I restart the RRAS service as well. Is there a good way for me to make the RRAS service start/restart after OpenVPN? Are service dependencies the way to go? Obviously I could write a batch file to do this, but I'd like to make the process as bullet-proof and obvious as I can so it doesn't cause problems for other admins.

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