ssh

OpenSSH client config — sane defaults, keepalives, and host entries.

config

How to use it

Save the generated file as ~/.ssh/config and make sure it’s private: chmod 600 ~/.ssh/config
If you enabled connection multiplexing, create the socket dir: mkdir -p ~/.ssh/sockets
Settings under Host * apply to every connection; add more Host blocks as needed.
Test what SSH will use for a host with: ssh -G