Simplest way to deny access to a class C

Gary Gatten Ggatten at waddell.com
Thu Mar 3 17:08:33 UTC 2011


Adding null routes to the address space in question will prevent comms, but it won't stop traffic getting to you and then perhaps being logged.

Some sort of firewall with a policy that denies them without logging?

----- Original Message -----
From: Jorge Biquez [mailto:jbiquez at intranet.com.mx]
Sent: Thursday, March 03, 2011 10:59 AM
To: freebsd-questions at freebsd.org <freebsd-questions at freebsd.org>
Subject: Simplest way to deny access to a class C

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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