3CX Phone System behind Check Point 3100

[Mboux23]

Hello

Has anybody ever made 3CXPhone System Check Point Security Gateway | R80.40.

Tried options found here and ever the internet but 3CX firewall checker fails every time.

I have added all necessary NAT rules and NAT port translation

[PhoneBoy · Accepted solution]

I suspect you will need to do a static NAT to a different IP address (not the firewall's external IP).
This is based on this thread for one of our SMB appliances: https://community.checkpoint.com/t5/SMB-Gateways-Spark/3CX-Phone-System-behind-1450-Appliance/m-p/10...

[Mboux23]

Hi PhoneBoy

Thanks for your reply.

Your suggestion have resolve my isuue. I did Static NAT and its work fine now and firewall check passed sucessfully.