SSH: Connection Refused vs Connection Timed Out
Two SSH errors, opposite causes. Refused means the server answered. Timed out means nothing answered at all. Learn which test to run, and from where.
#ports
Filtering by topic #ports · clear
What ports are and how Linux services listen
A port is how a server sorts incoming traffic to the right service. Learn to read what is listening with ss, and tell a local port from a public one.