RE: server admn help

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matt...

is it that users are trying to login into/access the machine? if this is the
case, i believe there are ways that you can essentially disallow access to
the given ip, either at the router (if you have one) or via the use of
iptables. a search on google would probably be the best way to get quick
information (assuming you haven't already). you might also want to post to
some of the other redhat/linux mailing lists. i also seem to recall that
there are a few security oriented mailing lists that could be helpful.

when all else fails, you would probably have luck calling any company that
does linux/system integration. just ask them how they'd go about solving the
issue for a small business. you'd be surprised at how much information you
might get this way!

good luck!


-----Original Message-----
From: fedora-list-bounces@xxxxxxxxxx
[mailto:fedora-list-bounces@xxxxxxxxxx]On Behalf Of RoboticGolem
Sent: Monday, March 14, 2005 6:30 AM
To: For users of Fedora Core releases
Subject: server admn help


I run a small mail server mainly for friends and I and I'm having a
problem.  Every week or so someone, from a different IP every time,
tries to bust into my server.  From my experience with linux I dont
see why this cant be done, I just dont know where to start.

Is there any way to have the system black list ips that fail a login
attempt 2 or 3 times and have it automatically blacklist people who
try users that dont exist?

...or if you could point me to a webpage that discusses this that
would be great.

Thanks in advance,
Matt

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