Github pull时报错:"ssh: connect to host github.com port 22"的解决方式

1.在连接github时，执行”ssh -T [email protected]” 命令时，出现：

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

2.服务器改用ssh方式更新代码，报错：

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

解决方式

步骤：

1.进入.ssh目录 

cd ~/.ssh

ps: 

私钥：id_rsa 

公钥：id_rsa.pub

没有的话需自行生成

生成ssh秘钥教程：

https://docs.github.com/cn/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent#

2.新建一个以config为文件名称的文件

  写入以下内容：

Host github.com
User github的邮箱
Hostname ssh.github.com
PreferredAuthentications publickey
IdentityFile ~/.ssh/id_rsa
Port 443

3.将文件权限给600 (windows忽略)

4.执行`ssh -T [email protected]`测试连接

出现上图就算验证成功了