Kartik wrote
-How is Openvpn related to TLS VPN ?
OpenVPN is a SSL / TLS VPN.
Kartik wrote
-Is there any difference between TLS VPN and OpenVPN?
OpenVPN uses SSL / TLS via openssl, but any other software is also able to use it.
Kartik wrote
-In order to practically implement OpenVPN, I where so I need to install server. Can you please give a me a example of a vpn setup, like where is server and where is client and how does everything works?
The config file determines which instance of openvpn is a client and which is a server, the software itself remains the same on both sides. An example of a basic openvpn setup where 2 hosts communicate over a secure channel and nothing else (no inet over the vpn, no lans over the vpn) is here:
http://www.ircpimps.org/openvpn.configs
Kartik wrote
-Can I install a OpenVPN server on Windows 7 or it can be installed only on a Windows server OS ?
It does not need to be a server version of windows. People run it on XP, win7, etc.
Kartik wrote
-Can you guide me to a good book, where OpenVPN is explained in a very simplified manner.
The best resources I can point to are the howto and the manual
howto:
http://www.openvpn.net/howto
manual:
http://www.openvpn.net/man-beta
While they might not seem simplified, they are. Very little of the troubles people encounter as actually due to openvpn, and usually are due to a lack of understanding the networking they want to use with openvpn.
