Configuration examples

Below are the most common type of IPsec configurations people use. While written for libreswan, the instructions will work for openswan as well unless specifically noted.

• Libreswan IPsec on both sides of the tunnel

host to host VPN

subnet to subnet VPN

VPN server for roaming phones and laptops

Using XAUTH with Google Authenticator

• Libreswan IPsec server with third party clients

• Libreswan IPsec client with third party servers