Set up the client at site A

From the VPN menu choose OpenVPN and go to the Client tab. Click the + button to configure a client.

Enter these values:

Disabled	not checked
Server Mode	Peer to Peer (Shared Key)
Protocol	UDP	same as Site B
Device mode	tun
Interface	WAN
Local port	leave empty
Server host or ad- dress	Site B’s public IP address or FQDN
Server port	9876	the port Site B is running the OpenVPN server on
Proxy host or ad- dress	leave empty if not using a proxy
Proxy port	leave empty if not using a proxy
Proxy authentica- tion extra options	leave empty if not using a proxy
Server host name resolution	check if Site B sometimes has connectivity prob- lems
Shared Key	do not check ‘Automatically generate a shared key’ but paste the Shared Key from site B
Encryption     algo- rithm	AES-256-CBC (256-bit)	same as Site B
Hardware Crypto	Choose ‘No Hardware Crypto Acceleration’ un- less the hardware has an accelerator
IPv4 Tunnel Net- work	192.168.204.0/30	same as Site B
IPv6 Tunnel Net- work	leave empty
IPv4 Remote Net- work/s	192.168.20.0/24	site A’s subnet
IPv6 Remote Net- work/s	leave empty
Limit         outgoing bandwidth	leave empty unless required
Compression	same as Site B
Type-of-Service	not checked
Advanced	redirect-gateway def1;	This makes all traffic, including Inter- net traffic, go through the tunnel.

Click Save.

The tunnel should now work and internet traffic should be routed from Site A through the tunnel out site B.

By Vorkbaard, 2013-07-29 – gmail{a}vorkbaard[.]nl