Article View: comp.security.misc
Article #1120Re: ISPs can easily decrease net abuse
From: Walter Roberson
Date: Mon, 01 Dec 2003 19:02
Date: Mon, 01 Dec 2003 19:02
29 lines
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2682 bytes
In article <Xns9444C6E5598CBjuergennieveler@nieveler.org>, Juergen Nieveler <juergen.nieveler.nospam@arcor.de> wrote: :roberson@ibd.nrc-cnrc.gc.ca (Walter Roberson) wrote: :> Not all NAT implimentations are specific about who they let back in. :Not to mention that NAT will pass away as soon as everybody is on IPv6 In my opinion, NAT will continue to be used with IPv6. We -prefer- the behaviour of hiding behind a small number of IP addresses to the extent practical: there is no point in giving away information about our internal computer facilities if we do not need to. Also, there are other uses for NAT. For example, in order to get around an ISP filter combined with lack of IPSec at a remote end, I routed from a remote office over an IPSec tunnel, and NAT the packets and spit them out on our local net for delivery to their final destination. The responses come back to our local IP addresses, the box de-NAT's them back into the remote office IPs, and those packets get forwarded over the IPSec tunnel to their proper origin location. This kind of forwarding of network traffic is not uncommon in facilities with satellite offices. IPv6 would not help because the ISP is going to continue with that filter no matter what IP address we use. -- Reviewers should be required to produce a certain number of negative reviews - like police given quotas for handing out speeding tickets. -- The Audio Anarchist
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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 11:02:31 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!news.maxwell.syr.edu!cyclone.bc.net!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: 1 Dec 2003 19:02:30 GMT Organization: National Research Council Canada - Conseil national de rechereches Canada Lines: 29 Message-ID: <bqg386$lvi$1@canopus.cc.umanitoba.ca> References: <Xns944467F028317jbuserspc9org@130.179.16.24> <MPG.1a353cd8c276f345989ea9@news-server.columbus.rr.com> <bqfvd8$k7b$1@canopus.cc.umanitoba.ca> <Xns9444C6E5598CBjuergennieveler@nieveler.org> NNTP-Posting-Host: zeno.ibd.nrc-cnrc.gc.ca X-Trace: canopus.cc.umanitoba.ca 1070305350 22514 192.70.172.132 (1 Dec 2003 19:02:30 GMT) X-Complaints-To: Postmaster@cc.umanitoba.ca NNTP-Posting-Date: 1 Dec 2003 19:02:30 GMT Originator: roberson@ibd.nrc-cnrc.gc.ca (Walter Roberson)