macOS ssh error: unable to negotiate with IP: no matching cipher git

环境：macOS Mojava version 10.14 在更新了Mac OS以后用ssh push 代码到服务器出现了下面这个错误。
ssh error: unable to negotiate with IP: no matching cipher found.Their offer: aes256-cbc,aes192-cbc,aes128-cbc...

Unable to negotiate with XX.X.X.XXX port XX: no matching cipher found. Their offer: aes256-cbc,aes192-cbc,aes128-cbc fatal: Could not read from remote repository.Please make sure you have the correct access rights and the repository exists.

出现错误的原因是要连接的代码仓库服务端的ssh版本过低，客户端与服务端的 cipher 没有匹配上，我们需要在自己的客户端（升级OS后的Mac）重新启用老的 cipher ,这样就能重新建立起连接了。
具体步骤如下：第一步：terminal 输入 sudo nano /etc/ssh/ssh_config

atcs-air:~ XXX$ sudo nano /etc/ssh/ssh_config

第二步：找到 Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc，删除这行前面的#号。

# Host * #ForwardAgent no #ForwardX11 no #PasswordAuthentication yes #HostbasedAuthentication no #GSSAPIAuthentication no #GSSAPIDelegateCredentials no #BatchMode no #CheckHostIP yes #AddressFamily any #ConnectTimeout 0 #StrictHostKeyChecking ask #IdentityFile ~/.ssh/id_rsa #IdentityFile ~/.ssh/id_dsa #IdentityFile ~/.ssh/id_ecdsa #IdentityFile ~/.ssh/id_ed25519 #Port 22 #Protocol 2 Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc #MACs hmac-md5,hmac-sha1,umac-64@openssh.com #EscapeChar ~ #Tunnel no #TunnelDevice any:any #PermitLocalCommand no #VisualHostKey no #ProxyCommand ssh -q -W %h:%p gateway.example.com #RekeyLimit 1G 1hHost * SendEnv LANG LC_*

第三步：保存 ssh_config 这个文件，退出。然后就可以和以前一样通过ssh连接代码仓库服务器了。
参考链接：
https://www.itechlounge.net/2...
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