Setting up a tunnel between two different firewalls can be rather tricky at times. Here we’ll go over configuring a VPN with a SonicWall NSA 250 on 126.96.36.199-39 with a PFSense on 2.3.1-RELEASE-p5.
Let’s go over the config on the sonicwall first. On it, I only need to get to the DMZ network on the X2 interface. There are two networks on the PFSense side, so need to create two address objects and place them in a group.
Now with the address objects created, we can start on the VPN configuration. The Sonicwall has a static IP, the PFSense does not. It easier to get the tunnel up if we use domain names for the IKE IDs. I created a dynamic DNS name with NO-IP.org to use on the PFSense side.