Dynamic ports TCP 32768=>65535 drops

[Lin]

Hello,

We're actually facing an issue on our infrastructure.

We have servers communicating through datacenter infrastructure (checkpoint firewalls).

Users faced latency on their applications. We saw the errors " First packet isn't ACK " . So we temporarily disactivate the packet filtering. 

There is no jitter issue on the links. But we can see on the firewalls some connections with the range port TCP 32768=>65535. 

Does someone face this issue or know how to troobleshoot ?

Thanks for your help.

Lina