Shulou(Shulou.com)06/01 Report--

Some strange errors may occur during ssh. Here is the parse:

1. Ssh does not allow root login

The following error is reported when connecting to ssh:

[root@SERVER] # ssh-p 10022 root@192.168.1.152

Root@192.168.1.152's password:

Permission denied, please try again.

Root@192.168.1.152's password:

Permission denied, please try again.

Root@192.168.1.152's password:

Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).

The password entered is correct but cannot be connected.

This is because the destination host does not allow root login, which is a secure policy. You can modify the configuration on the destination host:

Vi / etc/ssh/sshd_config

Change PermitRootLogin no to PermitRootLogin yes

And then

/ etc/init.d/sshd restart

Just log in again.

2. Ssh does not authenticate password-based authentication

The error in the ssh connection is as follows:

[root@SERVER] # ssh-p 10022 root@192.168.1.152

Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

No chance to enter a password.

Because password authentication is not allowed on the destination host, it is always secure, and only hosts with public keys are allowed to connect. Modify the destination host configuration:

Vi / etc/ssh/sshd_config

Change PasswordAuthentication no to PasswordAuthentication yes

/ etc/init.d/sshd restart

Just log in again.

3. Fingerprint information mismatch

This happens when you ssh:

[root@home] # ssh 192.168.1.3

@ @ @

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 the RSA host key has just been changed.

The fingerprint for the RSA key sent by the remote host is

07:6c:c2:ce:82:d6:77:3c:b0:20:b0:e0:f2:2d:47:84.

Please contact your system administrator.

Add correct host key in / root/.ssh/known_hosts to get rid of this message.

Offending key in / root/.ssh/known_hosts:5

RSA host key for 192.168.1.3 has changed and you have requested strict checking.

Host key verification failed.

This is mainly caused by a fingerprint verification failure because the host was previously connected, but now the information has changed, resulting in a mismatch. The fingerprint information of the host can be obtained locally.

> / root/.ssh/known_hosts

Just connect again.

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