Static NAT problem

[GigaYang]

Dear All,
We added a Static NAT setting in the firewall yesterday, other hosts from the Internet can connect to the our company's specific Server.

During the test, we can see the allow log of the connection, but in fact the connection does not pass normally. And you can see the following message from the Log:
"Connection terminated before detection: Insufficient data passed. To learn more see sk113479."

We have intercepted packets with wireshark on the intranet, and we have seen many "tcp retransmission tcp port reused..." error messages. We have suggested to refer to the following two articles to deal with it, but it doesn’t work.
https://support.checkpoint.com/results/sk/sk24960
https://community.checkpoint.com/t5/General-Topics/TCP-port-reuse-between-Check-Point-Remote-Access-...

So I was wondering if anyone else had a similar problem?

Thanks

[Chris_Atkinson]

How exactly is the NAT configured auto/manual, and did you setup a proxy arp?

[GigaYang]

Hi Chris,

It is Auto static NAT, so we did not set proxy arp.

[CheckPointerXL]

is the policy created inside a layer with appc/urlf enabled?