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.
Categories: Linux, System Administration
Tagged: 17033, Linux, ssh server
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 sol sshd[16366]: Failed [...]
Categories: Linux, Programs, Security, Shell, System Administration
Tagged: firewall, linux system, ssh server
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