I have a watchguard M440 now in my firewall policy I have an option to limit the connections per second to a specific port(s). What is recommended for a system of 20 remote sip phones?


That’s a pretty specific request. I doubt very many people have played with that, but FreePBX (when using the Adaptive Firewall) implements something very close to that already, so setting the number reasonably high (say 20 or 25) should be OK. If you run into problems with people not being able to connect, try running the number up a little bit.

Thank you