改用 443 端口连接 Github 修复 git push 时出现 Connection timed out 的问题

最近几天我这里出现了 git push 出现 timeout 的问题:

$ git push
ssh: connect to host github.com port 22: Connection timed out
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

不想改用 https 协议,因为 https 每次都要询问用户名,密码太烦了。最后找到了一个使用 443 端口连接 github 的方法:

修改 ~/.ssh/config 中 github.com 的配置, Hostname 改为 ssh.github.com, Port 改为 443:

Host github.com
  Hostname ssh.github.com
  Port 443

测试:

$ ssh -T git@github.com
Warning: Permanently added '[ssh.github.com]:443,[192.30.252.148]:443' (RSA) to the list of known hosts.
Hi mozillazg! You've successfully authenticated, but GitHub does not provide shell access.

$ git push
Warning: Permanently added '[ssh.github.com]:443,[192.30.252.151]:443' (RSA) to the list of known hosts.

参考资料

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