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tag: ssh server

CentOSLinuxShellSystem Administration

SSH – Unspecified GSS failure

Recently came across a problem with one system authentication to another via ssh. I added the public ssh key to ~/.ssh/authorized_keys entry. Changed ownership to the proper user and also chmod 600 ~/.ssh/authorized_keys. Still no dice. Using ssh -vvvv the following error returned on pubkey authentication: debug1: Unspecified GSS failure. Minor code may provide more […]

Dead linux users?

Not dead as in dead, but dead as in the user has logged out of the system and for some reason their shell is still open. This might happen if your system crashes before you can log out, there are network problems and you are disconnected, or a number of other reasons. This article explains how to log these “dead” shell users out.

If you are a system administrator of a linux system, you may find the following log entries familiar: Sep 15 02:00:30 sol sshd[16364]: Failed password for invalid user test from ::ffff: 61.167.x.x port 53382 ssh2 Sep 15 02:00:30 sol sshd[16365]: Failed password for invalid user test from ::ffff: 61.167.x.x port 53394 ssh2 Sep 15 02:00:30 […]