Trying to connect to an external NoMachine server by using a http proxy, I get the error message “The connection to the server was lost”. By standard our office’s proxies block the SSH port of the server (which is not 22) so I need to set a special proxy which passes requests to other ports.
We examined the connection with Whireshark. The Wireshark log looks like the connection is established properly by the proxy server.
In case anybody has a clue what goes wrong here, I enclosed a session log. For security reasons I anonymyzed user and server data in the file.