Our FreePBX is a VM and the host needed install updates, so shut down the FreePBX 14 VM and installed updates on the VM host. When powered the FreePBX VM back up it banned all IP including all our phones and our trunk.
In the emails it is sending out it is stating "The IP xxx.xxx.xxx.xxx has just been banned by Fail2Ban after attempts agains SIP on FreePBX
I checked the firewall in FreePBX to make sure that the settings were correct for the network interfaces and also zones for internal network were set to trusted.
Ahhh! No idea what changed to make it ban everything!