In Trace page, you can setup the protocol trace option. This feature will be helpful when you want to trace detailed protocol messages to solve a specific problem. Trace messages are displayed on the terminal screen.

SSH version, algorithm exchange and user authentication

Prints version exchange, encryption/decryption algorithms, compression methods, and server/user authentication details.

SSH TCP/IP and X11 tunneling

Prints port forwarding information on the terminal window.

TELNET option negotiation

Prints the detailed process of TELNET option negotiation between Xshell and the telnet server.