If you are getting error ‘Cannot open TUN/TAP dev /dev/net/tun‘ while starting OpenVPN server, it means that you should load ‘tun’ module which features TUN/TAP device driver: OpenVPN 2.1.1 i386-redhat-linux-gnu [SSL] [LZO2] [EPOLL] [PKCS11] built on Jan 26 2010 NOTE: the current –script-security setting may allow this configuration to call user-defined scripts LZO compression initialized…