Weblog Comments - A New Frontier for Spam

Weblog Comments - A New Frontier for Spam

Posted Oct 30, 2003 10:04 UTC (Thu) by nchip (guest, #13292)
Parent article: Weblog Comments - A New Frontier for Spam

I like to play with an idea of having to solve a puzzle
before being allowed to post or log in - that would solve
the problem of stupid comments as well :-)

In real life webmasters seem to resort to blocking unwanted IP's
from accessing the HTTP-server, via handmade lists. What people don't
realize, is that there are already publicly accisbly lists
you can use to protect your webserver too:

http://www.blars.org/mod_access_rbl.html

Since spammers use open proxies or spam directly from
their own IP space, you can use existing RBL:s. It has
the nice side-effect of protecting your site from email
address crawling..

Ofcourse, the tricky question is to choose the right RBL(s) to
use, there are many RBL's with varying quality. The following
ones are a good starting point, with a very low false positive
rate:

Open proxy RBL's
http://opm.blitzed.org/
http://cbl.abuseat.org/

Spammer IP space RBL's
http://www.spamhaus.org/

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