openssh无法登录 提示“server responded algorithm negotiation failed

修改ssh的配置文件 /etc/ssh/sshd_config

在配置文件中添加：

Ciphers aes128-cbc,aes192-cbc,aes256-cbc,aes128-ctr,aes192-ctr,aes256-ctr,3des-cbc,arcfour128,arcfour256,arcfour,blowfish-cbc,cast128-cbc

MACs hmac-md5,hmac-sha1,[e-mail],hmac-ripemd160,hmac-sha1-96,hmac-md5-96

KexAlgorithms diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group-exchange-sha256,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group1-sha1,[e-mail]

重启sshd服务后，即可正常连接。

sudo service ssh restart

如果此时输入密码正确，却总是连接不了，不停的显示输入密码，则在配置文件/ect/ssh/sshd_config里注释 PermitRootLogin prohibit-passwordt在下面添加PermitRootLogin yes  便可解决这一问题