Networking

Networking
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Fix: ssh: connect to host github.com port 22: Connection timed out


Fix: SSH Port 22 Timeout title over a silhouetted figure holding a light before a sealed dark gate while a glowing orange path curves around it to a bright citadel.

Your network blocks SSH on port 22, not your key. Route GitHub over ssh.github.com on port 443, make it permanent in ssh config, and verify with git.

Fundamentals of Networking


Diagram showing the networking stack and how data flows through it.

Networking fundamentals for developers: packets, IP addressing, routing, TCP and UDP, DNS, TLS, and a practical troubleshooting mental model.