The authenticity of host can’t be established ECDSA key fingerprint is SHA256

SSH登录连接Linux服务器提示The authenticity of host can't be established ECDSA key fingerprint is SHA256: Are you sure you want to continue connecting (yes/no/[fingerprint])?

SSH ECDSA key fingerprint is SHA256

解决SSH The authenticity of host can't be established

SSH命令连接云服务器：ssh root@服务器ip地址，提示如下：文章源自新手站长-https://xinshouzhanzhang.com/sshecdsakeyfingerprint.html

The authenticity of host ' ' can't be established.
ECDSA key fingerprint is SHA256:.
Are you sure you want to continue connecting (yes/no/[fingerprint])? 文章源自新手站长-https://xinshouzhanzhang.com/sshecdsakeyfingerprint.html

SSH连接服务器为什么会出现这个提示？新手站长网猜测可能是一种安全机制，出现这种情况一般有两个原因，一个是第一次登录云服务器，另一个是主机key发生了变化，解决方法很简单，输入yes，然后回车即可。文章源自新手站长-https://xinshouzhanzhang.com/sshecdsakeyfingerprint.html

那么问题来了，如果经常出现这个SSH提示怎么办？可以在SSH的时候加上StrictHostKeyChecking选项，新手站长网举例说明：ssh -o StrictHostKeyChecking=no root@你的本地IP地址。文章源自新手站长-https://xinshouzhanzhang.com/sshecdsakeyfingerprint.html

还有一种彻底去掉SSH主机验证的方法，就是修改/etc/ssh/ssh_config配置文件，在ssh_config配置文件中添加：文章源自新手站长-https://xinshouzhanzhang.com/sshecdsakeyfingerprint.html

StrictHostKeyChecking no
UserKnownHostsFile /dev/null

新手站长网是不建议这么做的，毕竟不安全。而且一边输入yes回车即可解决问题，没必要这么麻烦。文章源自新手站长-https://xinshouzhanzhang.com/sshecdsakeyfingerprint.html 文章源自新手站长-https://xinshouzhanzhang.com/sshecdsakeyfingerprint.html