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Date:      Thu, 3 Mar 2011 18:02:41 -0600
From:      Gary Gatten <Ggatten@waddell.com>
To:        'Patrick Gibson' <gibblertron@gmail.com>, Jorge Biquez <jbiquez@intranet.com.mx>
Cc:        "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   RE: Simplest way to deny access to a class C
Message-ID:  <11805_1299196962_4D702C22_11805_70_1_D9B37353831173459FDAA836D3B43499BD354A48@WADPMBXV0.waddell.com>
In-Reply-To: <AANLkTi=Fb_CiA76g79ZkP8o_yWsQcN6iuPD7w=dBxztQ@mail.gmail.com>
References:  <3382016411-764985335@intranet.com.mx> <AANLkTi=Fb_CiA76g79ZkP8o_yWsQcN6iuPD7w=dBxztQ@mail.gmail.com>

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Be careful of automated responses.  What if someone spoofs IP's of legit us=
ers / customers / whatever and your automated response blocks them?  Not go=
od.

I thought about blocking....well, never mind - might pi$$ someone off and a=
ttract unwanted attention...

-----Original Message-----
From: owner-freebsd-questions@freebsd.org [mailto:owner-freebsd-questions@f=
reebsd.org] On Behalf Of Patrick Gibson
Sent: Thursday, March 03, 2011 5:58 PM
To: Jorge Biquez
Cc: freebsd-questions@freebsd.org
Subject: Re: Simplest way to deny access to a class C

You might consider mod_security (/usr/ports/www/mod_security) which
can be set up to ban hosts based on behaviour or characteristics.

Or fail2ban (/usr/ports/security/py-fail2ban) is really great, too, in
that it scans whatever logs you want, and can trigger a block in your
firewall if enough violating log entries are found within a particular
period of time. Everything is totally configurable, and there are
plenty of examples that come with it.

Patrick


On Thu, Mar 3, 2011 at 8:59 AM, Jorge Biquez <jbiquez@intranet.com.mx> wrot=
e:
> Hello all.
>
> I am sorry in advance if this question sounds too stupid.
>
> I have a small server for personal use of webpages running:
>
> 7.3-PRERELEASE FreeBSD 7.3-PRERELEASE #0
>
> it is working fine , no problem very stable.
>
> I just need to block some IP class C address that are always trying to
> "discover" directories or applications under the web server. They do not =
do
> and can not do anything since this server has nothing installed but i am
> tired of seeing in the logs all the intents they do every 2-3 seconds.
>
> I have not installed any kind of firewall yet.
> What do you think is the best way to accomplish this task? If possible the
> easiest one. I do not want to do anything else but just bloc IP's, at this
> moment at least.
>
> Thanks in advance.
>
> Jorge Biquez
>
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> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
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