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Ubuntu 一般只默认安装openssh_client，需要对Ubuntu进行ssh需要安装openssh_server
最新版本openssh_server在ubuntu默认用7.2版本的，在7.2版本其官网声明已经Disabled diffie-hellman-group1-sha1 by default
解决办法来自链接
sudo vim /etc/ssh/sshd_config
#在最后添加并保存
KexAlgorithms diffie-hellman-group1-sha1,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1
Ciphers 3des-cbc,blowfish-cbc,aes128-cbc,aes128-ctr,aes256-ctr
ssh-keygen -A
sudo service ssh restart
ok了
