Forum Discussion
Martijn_van_de1
May 22, 2017Cirrus
Hi,
Is there a Check Point firewall between the internet and the F5, and is port 1720 (H323) used in the rule base as a custom service?
If have seen this kind of behavior with on of our customers. A telnet on port 1720 is accepted by the Check Point because Check Point wants to inspect the H323 traffic. Even if it is a custom service on the same port-number.
If there is a NAT rule, it seems like the F5 is accepting the connection, but in fact it is the Check Point.
Hope this helps.
Martijn.