Brent wrote:
Im running several servers all ranging from FBSD 4.11 through the 5.4 release
, patched of course. MY question is how do i check a system to see if has been
compromised ? I have already run a current version "chkrootkit" & found nothing.

There isn't a simple answer to that, but start with looking under /var/log and at the output of `last`. You might consider running tcpdump -o _file_ for a day or so and review it for illicit traffic.

The symptom im seeing is yesterday all of a sudden the root user was removed
from the /etc/passwd file & Im not sure on how to track down what happened. I
managed to recover from this. Are there any other tools that i can use to
track down say who did what on the box? files that may have changed & time &

find / -mtime 2

...would probably be a good starting point.

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