[AC-Admins] Recent botnet flooding

Scott Garron simba at anthrochat.net
Thu Sep 16 17:29:58 EDT 2010


      So it turns out that LionOPM was broken and probably has been for
quite some time.  I thought it was fixed when it stopped audibly
complaining in #opers about getting lookup errors on efnetrbl.org, but I
never bothered checking it, so I guess my assumption was wrong.

      Anyway, a script kiddie thought it would be amusing to connect
several hundred flood bots on open proxies to lion and try to annoy our
network's delicate flowers.  While I was poking around to try to get rid
of them, I remembered that someone pointed out this to me at some point:

http://encyclopediadramatica.com/Firefox_XPS_IRC_Attack

(Sorry for the spammy ED link, but it is relevant)

      I think it would be beneficial if we all included the iptables
commands mentioned on that page on our servers.  Run something like:

http://www.anthrochat.net/iptables_script.txt

      I also managed to get LionOPM working again, but I'm not exactly 
sure how.  I added another efnet check for tor exit servers, and changed 
the lookup for the efnetrbl back to rbl.efnetrbl.org from rbl.efnet.org, 
connected it via localhost, and ran a few checks on some of the IPs that 
it let slide by during the attack.  They all tested positive for open 
proxies or TOR exit servers when I checked them manually.  I guess we'll 
see what happens next time around, 'cause I've seen it in action in the 
past, and it is usually really effective.

      In addition, I don't have access to add/remove admins/opers via
operserv.  I'd like to add Fidgetfox, since his server has been fully
adopted at this point.

-- 
Simba


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