Simplest way to deny access to a class C

[Patrick Gibson]

fail2ban by default only bans an IP for 10 minutes, and that's
configurable. It can also email you anytime it imposes a ban, so one
can keep an eye on things at least in the beginning to see if it's
causing a problem for legitimate users.

On Thu, Mar 3, 2011 at 4:02 PM, Gary Gatten <Ggatten at waddell.com> wrote:
> Be careful of automated responses.  What if someone spoofs IP's of legit users / customers / whatever and your automated response blocks them?  Not good.
>
> I thought about blocking....well, never mind - might pi$$ someone off and attract unwanted attention...
>
> -----Original Message-----
> From: owner-freebsd-questions at freebsd.org [mailto:owner-freebsd-questions at freebsd.org] On Behalf Of Patrick Gibson
> Sent: Thursday, March 03, 2011 5:58 PM
> To: Jorge Biquez
> Cc: freebsd-questions at 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 at intranet.com.mx> wrote:
>> 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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