There is no particular difference between server and client. In the link to the HowTo, you will see the HQ config does not have a "remote" line so it is not trying to call anywhere. Implicitly, therefore, it is in server mode. The Remote Office Configuration has a "remote" line so, implicitly, it is running as client. If both ends have a "remote" line it may also work, but I don't know. In that case the client logically becomes the first one to establish a connection to the other but it really does not matter. It can also be controlled by the firewall as only the server should allow incoming connections.

Nick,

Correct if i am wrong but the document is how to setup a OpenVPN Server? I have a OpenVPN Server on AWS, so I am guessing there is not native OpenVPN Client in ClearOS? I'll try installing openvpn client via shell, but I hope it doesnt take much config for a Open VPN site to site.

Ben

See the docs for a HowTo here.

Your yum command is slightly wrong. Try "yum install openvpn", perhaps with the "-y" switch. If it does not work, please state your version of ClearOS and the output of "yum repolist".

You can also do an IPsec VPN to AWS but it needs a particular set up which is detailed on Libreswan's web site.