I'm trying to get a VPN set up with internal access only sites.
I have set up a VPN on a windows server (single VPS server), and I can connect from a remote computer and I get an IP assigned correctly (from 192.168.1.1 - 255)
Next I configured IIS (running on the same machine) IP Address and Domain Restrictions to only allow only IP address range 192.168.1.0 with subnet mask 255.255.255.0
When I connect to the VPN with "Use Default Gateway on Remote Network" (so that requests must go through the vpn), I get a 403 from the internal sites.
What did I miss?
So after figuring out that I can't ping the server's internal ip from the client and vice versa, and seeing this question, I added the LAN routing service to the server, which allowed pinging. I then added a route as per this question, and now I can connect to sites with restricted IPs.