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GitHub端口22连接超时改用443端口连接 clone github仓库时老是提示22端口超时，如下： $ git clone [email protected]:xtod/yuwang.git Cloning into 'yuwang'... 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. 还提示是否对该仓库具有访问权或者仓库是否存在，这不废话么，我肯定确认。 于是试着ssh -T了一下，看能不能访问，但提示的还是22端口超时 $ ssh -T [email protected] ssh: connect to host github.com port 22: Connection timed out 现在来看应该是访问问题，在此把访问端口改为443吧，不用22了，编辑~/.ssh/config写入如下内容： Host github.com HostName ssh.github.com User git Port 443 PreferredAuthentications publickey IdentityFile ~/.ssh/id_ed25519 然后再ssh -T试一下 ...