Only USG6510E/6510E-POE/6530E does not support TCP Proxy function.
License Requirements
The Proxy Policy function is not license-controlled.
Precautions
TCP proxy has specific impact on device performance. When configuring a proxy policy, detail the matching conditions of the policy. This is because a proxy policy with large matching conditions affects the device forwarding performance.
Like other policies of the FW, proxy policies are matched according to their priorities.
For TCP proxy, the forward and reverse paths of packets must be consistent. Otherwise, the services may be interrupted.
If the same flow passes through the FW multiple times and matches the TCP proxy policy, the TCP proxy becomes abnormal. To avoid this situation, ensure that the flow passes through different VLANs or VSYSs on the firewall during deployment.