On Wed, 2 Jan 2008, Anjang Aki wrote:
> I've been looking for a proper way to to track down
user's activity inside
> the shell as I'm helping my colleague to configure a
web hosting and shell
> hosting server.
>
> Someone have referred me to this article --
> h
ttp://bsdtips.utcorp.net/mediawiki/index.php/Snoop which
is using 'watch'
> commands to view user's activity once they logged in to
the server
>
> I found that this 'watch' utility is very useful and
are able to fulfill my
> needs but I can only be able to watch the activity once
I'm logging to the
> server at the time the users are logging in.
>
> Is there is any way that logging user's activity can be
done without a need
> for me to login at the server at the same time? Perhaps
the activity can be
> logged into a file and I can read it later.
>
> Or is there is any other utility I can use just to
monitor user's activity
> as the server is misused by a user previously and I
don't want it to happen
> again in the future.
On recent FreeBSD versions, you can use the security event
auditing facility
to log all programs run by the user. This isn't quite the
same as all
commands, as some commands are internal to the shell (i.e.,
"echo", "alias",
"cd", etc), but would certainly give you a trail
of all substantive commands
(editor sessions, etc). Take a look at the FreeBSD handbook
chapter on audit.
Make sure to set the policy flag to capture the full command
line, not just
the command itself.
http://www.freebsd.org/doc/en_US.ISO8859-1/b
ooks/handbook/audit.html
I use the following /etc/security/audit_control to configure
command line
auditing on my shell boxes:
dir:/var/audit
flags:lo,+ex
minfree:20
naflags:lo,+ex
policy:cnt,argv
filesz:104857600
I also have audit_warn configured to compress the trails
when they are cycled,
per the example in the chapter. You can then use
auditreduce and praudit to
select and print records in various forms. If you're not
interested in
auditing commands by all users, you can use the audit_user
config file to
specify +ex auditing for just that one user.
Robert N M Watson
Computer Laboratory
University of Cambridge
>
> Best regards,
>
>
> --
> -- Anjang Aki --
> mailman.msc gmail.com
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