Article View: comp.protocols.tcp-ip
Article #15449Re: Where should I report port scans?
From: Lawrence Baldwin
Date: Fri, 02 Mar 2001 00:41
Date: Fri, 02 Mar 2001 00:41
31 lines
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2526 bytes
Ray Abbitt wrote: > > In article <3A9D3A6B.F5CC6176@mynetwatchman.com>, > Lawrence Baldwin <baldwinlSPAMMENOT@mynetwatchman.com> wrote: > > > >Our false-positive rate is remarkably low...in the last 30 days we have > >only had ONE incident where the source provider indicated that the > >attack was really their load-balancing servers sending DNS queries to > >determine RTT and best route. > > > One question on that. Do you really consider sending repeated DNS queries > to systems that are not listed as DNS servers (and in fact do not run > DNS servers) anything other than abusive? Maybe the load-balancing software > is broken, but once they know that, shouldn't something be done about it? > (And was Microsoft the guilty party? I'm still getting large numbers of > attempts [30000-40000 a month] on port 53 from various Microsoft addresses.) > I think the F5 load balancing issue needs more investigation...my agents also are continuing to report port 53 scans from usatoday even days after NOT surfing there. Now they are blocking 53, so I'd expect some amount of re-tries...but retrying DAYS later...I agree, something is wrong. lb. -- ------------------------- Lawrence Baldwin Protocol Scientist 678-624-0924 http://www.mynetwatchman.com/about.htm - I'm under attack, now what?
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f9325,5fddf9b17d575149 X-Google-Attributes: gidf9325,public X-Google-Thread: 10090f,64b87d735e5bf97e X-Google-Attributes: gid10090f,public X-Google-ArrivalTime: 2001-03-01 16:41:19 PST Path: arc1-ca.pugleaf.net!supernews.google.com!sn-xit-02!supernews.com!easynews!feedwest.us.telia.net!feedeast.us.telia.net!us.telia.net!howland.erols.net!feed2.news.rcn.net!rcn!newsfeed.atl!news1.atl.POSTED!not-for-mail Message-ID: <3A9EEC20.450BB780@mynetwatchman.com> From: Lawrence Baldwin <baldwinlSPAMMENOT@mynetwatchman.com> X-Mailer: Mozilla 4.7 [en] (WinNT; U) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: comp.protocols.tcp-ip,bellsouth.net.security Subject: Re: Where should I report port scans? References: <3A9C3710.7F2E86F8@mynetwatchman.com> <87zof7k7hx.fsf@cain.internet2.edu> <3A9D3A6B.F5CC6176@mynetwatchman.com> <96gk79.khf.ln@linux.abbitt.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 31 Date: Thu, 01 Mar 2001 19:41:04 -0500 NNTP-Posting-Host: 208.61.190.232 X-Trace: news1.atl 983493665 208.61.190.232 (Thu, 01 Mar 2001 19:41:05 EST) NNTP-Posting-Date: Thu, 01 Mar 2001 19:41:05 EST