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North American Network Operators Group

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Re: scripts to map IP to AS?

  • From: Johannes Ullrich
  • Date: Thu Feb 20 09:43:45 2003


> There are still 10K-20K hosts spewing M$SQL slammer/sapphire packets, 
> and I'd like to start blocking routing to those irresponsible AS's 
> that haven't blocked their miscreant customers.

Its too early for such harsh measures. Unless you can live without 
most major consumer ISPs.

I don't have the AS data handy. but here a quick list of the top 20
domains with number of Sapphire infected hosts:


    948	uu.net   ( 943 of which are 'da.uu.net' )
    796	attbi.com   ( 501 are client.attbi.com. 295 client2.attbi.com. )
    490	qwest.net   ( 488 are da.qwest.net )
    445	att.net     ( 438 are dial-access.att.net)
    416	rr.com
    408	btopenworld.com
    395	rasserver.net
    376	comcast.net
    333	ipt.aol.com
    304	com.br
    279	pacbell.net
    272	tpnet.pl
    267	dsl-verizon.net
    259	net.au
    253	ttd.es
    243	cable.rogers.com
    224	mindspring.com  (152 are dialup.mindspring.com)
    220	dyn.optonline.net
    217	net.br
    205	ne.jp


> 
> http://isc.sans.org/port_details.html?port=1434
> -- 
> William Allen Simpson
>     Key fingerprint =  17 40 5E 67 15 6F 31 26  DD 0D B9 9B 6A 15 2C 32
> 


-- 
--------------------------------------------------------------------
jullrich@euclidian.com             Collaborative Intrusion Detection
                                         join http://www.dshield.org




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