Article View: comp.security.misc
Article #1089Re: ISPs can easily decrease net abuse
From: Walter Roberson
Date: Tue, 02 Dec 2003 04:08
Date: Tue, 02 Dec 2003 04:08
29 lines
2627 bytes
2627 bytes
In article <MPG.1a3584e54aa22f3e989eab@news-server.columbus.rr.com>, Leythos <void@nowhere.com> wrote: :And the intent, if you had followed the start, what the NAT with no :forwarding would be used. Why would I post about how it could protect if :the intent was to forward all ports? We aren't mind-readers, Leythos, to know about your *intent*. The words you actually -wrote- had no indication in them that you understood about issues such as port forwarding or persistant translations. What you wrote was, "Actually, if ISP's required users to install a router with NAT it would eliminate most of it. The hacks and worms could not infect new machines protected by NAT." which simply is not true. There is nothing in any official definition of 'NAT' that talks about duration of translations or restricting translations to be usable to only returning traffic, and seeing as Cisco has a patent on its "Adaptive Security Algorithm", many NAT implimentations are overly generous on leaving open port translations... leaving windows during which hacks and worms *will* be able to infect new machines that are active on the 'net. -- I wrote a hack in microcode, with a goto on each line, it runs as fast as Superman, but not quite every time! -- Dave Touretzky and Don Libes
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 10c8f2,17f958067a510d3b X-Google-Attributes: gid10c8f2,public X-Google-Thread: ff723,17f958067a510d3b X-Google-Attributes: gidff723,public X-Google-ArrivalTime: 2003-12-01 20:08:17 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!newsfeed2.dallas1.level3.net!news.level3.com!news-out.visi.com!petbe.visi.com!newsfeed.news2me.com!snoopy.risq.qc.ca!torn!canopus.cc.umanitoba.ca!not-for-mail From: roberson@ibd.nrc-cnrc.gc.ca (Walter Roberson) Newsgroups: comp.security.misc,can.internet.highspeed Subject: Re: ISPs can easily decrease net abuse Date: 2 Dec 2003 04:08:16 GMT Organization: National Research Council Canada - Conseil national de rechereches Canada Lines: 29 Message-ID: <bqh37g$6nd$1@canopus.cc.umanitoba.ca> References: <Xns944467F028317jbuserspc9org@130.179.16.24> <MPG.1a353cd8c276f345989ea9@news-server.columbus.rr.com> <bqfvd8$k7b$1@canopus.cc.umanitoba.ca> <MPG.1a3584e54aa22f3e989eab@news-server.columbus.rr.com> NNTP-Posting-Host: zeno.ibd.nrc-cnrc.gc.ca X-Trace: canopus.cc.umanitoba.ca 1070338096 6893 192.70.172.132 (2 Dec 2003 04:08:16 GMT) X-Complaints-To: Postmaster@cc.umanitoba.ca NNTP-Posting-Date: 2 Dec 2003 04:08:16 GMT Originator: roberson@ibd.nrc-cnrc.gc.ca (Walter Roberson)