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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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 , asthis contains the packages necessary for the installation and theinstructions are provided below.
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