Cant ssh for a user

[kirtikjr]

This is the entry when I tail /var/log/secure when I ssh for user "nightly"...

Aug  4 03:19:48 itanium2 sshd[10791]: Illegal user nightly from ::ffff:10.91.220.35

Aug  4 03:20:10 itanium2 sshd[10791]: Failed password for illegal user nightly from ::ffff:10.91.220.35 port 32862 ssh2

What could be the reason, plz suggest.

[kirtikjr]

and password is correct, works when I telnet, just ssh fails.

[kirtikjr]

there is a local user for the host with which I can ssh to the system but not with nightly. nightly is not in /etc/passwd

[atreyu]

What authentication mechanism is "nightly" using to authenticate via telnet?

[kirtikjr]

I guess it uses LDAP or NIS

[atreyu]

On the server, in /etc/ssh/sshd_config, is a list of users listed in AllowUsers?

If LDAP/NIS, maybe there is client-side configuration that needs to be done? Google for something like "Failed password for illegal user" + NIS or LDAP

[kirtikjr]

there is nothing listed in AllowUsers. Let me try to see somewhere else. thanks

[kirtikjr]

the IP settings of the present host was changed.
So the keys got messy.
I disabled the PubkeyAuthentication option in /etc/ssh/sshd_config
Now I can login, but i need to regenrate the keys

[atreyu]

ah. you can use ssh-keygen for that. and try ssh-copy-id to properly and safely copy the SSH keys to your remote host.