搭建环境【3】SecureCRT_CN连接ubuntu 主机遇到的问题

问题 1：

Key exchange failed.

No compatible key exchange method. The server supports these methods: curve25519-sha256,[email protected],ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,[email protected],diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256

No compatible hostkey. The server supports these methods: rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519

解答：

vi /etc/ssh/sshd_config

#add the following text

[email protected],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

#restart ssh

systemctl restart sshd.service

问题 2：

Key exchange failed. No compatible hostkey. The server supports these methods: rsa-sha2-512,rsa-sha2

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解决方法：

https://blog.csdn.net/weixin_42804852/article/details/123677678

https://programmerah.com/solved-securecrt-error-key-exchange-failed-no-compatible-key-exchange-method-51086/

https://www.cnblogs.com/shenjianyu/p/6407042.html