Firewall trying to register with 3CX system.

[pogue1000]

Well, finally purchased me a 16 user license and testing out the system some more and in my server event log i am seeing the following error

The IP 192.168.1.1 has been blacklisted for 1800 sec. Reason: Too many failed authentications!

192.168.1.1 is the internal IP address of my firewall. Curious why my firewall is attempting to register with the system?

Thanks

 

[eagle2]

Most probably it is an attack outside.
Your firewall / NAT are probably not set correctly, that's why you see the internal address.
Can you debug / see logs of the router ?