Port Blocking

Our VPN stopped working on 3/31 (last worked on 3/30). A port scan from outside shows that the TCP port (1701) isn't open. A tool that scans the UDP ports shows that the UDP ports aren't open. It looks like you've started blocking the ports. No changes have been made to the router or the server.

How do we get the ports opened?

PM sent to Comcast Business.