Increase verbosity for PAM / SSH?

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jnojr
Posts: 133
Joined: 2007/11/29 23:42:03
Location: San Diego, CA
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Increase verbosity for PAM / SSH?

Post by jnojr » 2015/05/19 23:44:34

There's an authenticated scanning system (not optional) that can no longer connect to my CentOS 6 virtual hosts. I can SSH in just fine. All the logs tell me is:

Failed password for user <username> from <IP address>

I need to know a little more than that. I don't know if this is an sshd issue or a PAM issue, but I need more information about WHY this is failing. The account is not locked or expired.

Emma Taylor
Posts: 58
Joined: 2015/04/11 04:59:25
Location: United Kingdom

Re: Increase verbosity for PAM / SSH?

Post by Emma Taylor » 2015/05/21 06:53:31

Hi,

The reason behind this is offering multiple keys to the server as the server rejects any key after too many keys are offered. For instance, if you have more than 3 or 4 failed login attempts your IP address might be blocked in server firewall or you can also check the following discussion thread if the issue still persists -

http://forums.bodhost.com/showthread.ph ... t-password
http://forums.bodhost.com/showthread.ph ... ng-SSH-Key

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