安装了ubuntu20.04后，以前老版本的secureCRT通过ssh连接后报错
解决办法
sudo vi /etc/ssh/ssh_config
重启
sudo service sshd restart
KexAlgorithms curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1