更改端口报错

[qingguoguo]

@DESKTOP-E292LO1:/mnt/c/Users/qingguoguo$ ssh localhost -p 23
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
SHA256:5FUfal0zhTGixCtIGH9k8xisy1geGehpGQCyflugwII.
Please contact your system administrator.
Add correct host key in /home/qgglinux/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /home/qgglinux/.ssh/known_hosts:1
remove with:
ssh-keygen -f "/home/qgglinux/.ssh/known_hosts" -R "[localhost]:23"
ECDSA host key for [localhost]:23 has changed and you have requested strict checking.
Host key verification failed.

[iWangJiaxiang]

按照您提供的输出来看，可以在WSL里执行以下命令清除已有的host key信息，然后下一次登陆时可重新添加host key信息。

ssh-keygen -f "/home/qgglinux/.ssh/known_hosts" -R "[localhost]:23"

或者，可以禁用host key检查。（不推荐）