SecureCRT没办法连接腾讯云服务器解决办法

SecureCRT 连接腾讯云服务器出现如下问题：

Key exchange failed.
No compatible key exchange method. The server supports these methods: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256


Press Ctrl C to cancel or Enter to reconnect immediately.
Reconnecting in 1 seconds...

原因

高版本的openssh无法对旧版本CRT客户端密钥交换算法支持

解决办法

1. 查看当前是否安装open-ssl

yum list installed | grep openssh-server

如果未安装，则安装即可
yum install openssh-server

2. 修改配置、允许低版本的密钥算法

vim /etc/ssh/sshd_config

3. 修改配置内容

HostKeyAlgorithms= ssh-rsa,ssh-dss
KexAlgorithms= diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1

如果有同名配置，需要注释掉

4. 重启sshd

systemctl restart sshd

大功告成

这篇好文章是转载于：学新通技术网