I have a firewall whose configuration is to block any connection, inbound or outbound, by default.
I want to telnet from within the firewall to a server outside of it.
Let's assume I want to telnet port 12 on a server whose IP is 18.104.22.168
Do I need to set any other rule than open outbound connections to port 22.214.171.124:12?
In other terms, does Telnet use other ports than the port it is trying to connect to?