#firewalld

"No route to host": usually a firewall saying no, sometimes a machine that isn't there

Fix "No route to host" from ssh, curl or nc: check the firewall on the other machine (firewalld rejects by default), then whether the host is up.

Beginner · 4 min read

Connection timed out

Networking

"Connection timed out" vs "Connection refused": what each one tells you, and how to fix it

Timed out means a firewall dropped the packets; refused means nothing listens there. Tell them apart with nc and curl, then fix ufw, firewalld or the bind address.

Beginner · 5 min read