Installing and Configuring OpenVPN 2.3 on Microsoft Windows Small Business Server 2003

My previous posts(http://nkush.blogspot.com.au/2012/08/installing-openvpn-22-on-centos-63-64bit.htmlandhttp://nkush.blogspot.com.au/2011/10/installing-openvpn-22-on-centos-57.html)have been on installing OpenVPN on Linux. This post is slightly different as it installs and configures OpenVPN ona Microsoft Windows Small Business Server (SBS). The SBS installation isalso different from the previous write-ups since this configuration usesEthernet bridging instead of tunneling. Although SBS comes with Layer2 Tunneling Protocol (L2TP) andPoint-to-point Tunelling Protocol (PPTP) for Virtual Private Network(VPN), some users may want to use an Secure Sockets Layer (SSL) basedVPN such as OpenVPN.

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Connecting to OpenVPN from a Mac using Tunnelblink

To connect to an OpenVPN server you need an appropriate OpenVPN clientinstalled to establish the SSL link. For Apple Mac OS X systems,TunnelBlick (http://code.google.com/p/tunnelblick/) is a good graphicaluser interface. At the time of this blog the current latest stableversion of TunnelBlick available was 3.2.7. These instructions wereexecuted on an Apple iMac running Mac OS X 10.7.4. As with all otherposts on this blog, the purpose of this post is not to provide atutorial, but instead to documents the steps taken, for my ownbenefit.

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Installing OpenVPN 2.2 on CentOS 6.3 64bit

This post is just an update of a previous post that used CentOS 5.7 andOpenVPN 2.2(http://nkush.blogspot.com.au/2011/10/installing-openvpn-22-on-centos-57.html).The basic instructions are the same, however this post uses some newerpackages which may have been relocated to new URLs. Again this blog andthe posts are mostly for my own reference and not intended asstep-by-step instuctions for other systems/network administrators Install RPMForge or RepoForge as it’s now known[1] wgethttp://pkgs.

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Installing OpenVPN 2.2 on Centos 5.7

OpenVPN is an SSL based VPN. There are other VPN solutions such asIPsec, etc. but OpenVPN provides a cost effective alternative. I likeOpenVPN as it support two-way authentication, i.e. both the client andserver authenticate using certificates. To install OpeVPN on CentOS weneed a number of cryptographic libraries. The simplest way is to use theDAG/RPMForge repository. Set-up the RPMForge repository [1], asthis contains the packages necessary for the installation and theinstructions are provided below.

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