I probably don’t understand enough of how the responsive firewall works so I’m sure I’m doing something wrong.
I have my NIC with my public IP setup as an untrusted internet interface.
I have all the protocols disabled in the responsive firewall section.
In order for my external devices to first “register” with the server I have to enable my SIP protocol. Once the device has done it’s initial registration I can go back and disable the protocol and the remote device continue to work even after reboots.
If I move the device to a different location I have to repeat the previous steps for it to register.
If I leave the protocol enabled all the time I get a lot of anonymous sip connections (which is dropped by freepbx but it’s showing up in the logs and I’m trying to keep everything clean)