Re: Why Scopes? (was: Re: [saad] About saad)
Melinda Shore <mshore@cisco.com> Fri, 17 October 2003 18:32 UTC
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Date: Fri, 17 Oct 2003 14:31:09 -0400
Subject: Re: Why Scopes? (was: Re: [saad] About saad)
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To: James Kempf <kempf@docomolabs-usa.com>
From: Melinda Shore <mshore@cisco.com>
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On Friday, October 17, 2003, at 01:03 PM, James Kempf wrote: > One of the things I'd like to see is a list of why people use scoped > addresses (RFC 1918) in IPv4. I've talked to a very large number of people about this (or rather why they use NATs, which is a slightly different question), and the most common reasons are: 1) don't want to buy more addresses 2) simplification of network management/renumbering 3) security/firewalling/unreachability The first two are already being dealt with in one form or another. The third is only peripherally being addressed and certainly not satisfactorily (for whatever value of "satisfactory"). The reality is that some large number of users, including some users who consider themselves relatively expert (network administrators, etc.) don't want their hosts to be reachable by default but they do want them to be able to initiate connections themselves. I'm not sure there's a good answer to this question, since the users' wishes are incompatible with the IETF's working assumptions about reachability. There was a BOF on distributed firewalls several meetings ago that I think is at least in some way relevant, but 1) there doesn't seem to be a lot of momentum behind it, and 2) some jiggering would be required. Also, this really is a big-A architecture problem that involves pulling together some disparate technologies, and has been noted elsewhere, the IETF doesn't do this sort of thing very well. Melinda _______________________________________________ Saad mailing list Saad@ietf.org https://www1.ietf.org/mailman/listinfo/saad
- Re: [saad] About saad Geoff Huston
- RE: [saad] About saad Michel Py
- Re: [saad] About saad James Kempf
- [saad] About saad Michel Py
- RE: [saad] About saad marcelo bagnulo
- RE: [saad] About saad Michel Py
- RE: [saad] About saad J. Noel Chiappa
- Re: [saad] About saad James Kempf
- RE: [saad] About saad Michel Py
- Re: [saad] About saad Fred Baker
- Re: [saad] About saad Brian E Carpenter
- Re: [saad] About saad James Kempf
- RE: [saad] About saad Michel Py
- Why Scopes? (was: Re: [saad] About saad) James Kempf
- Re: [saad] About saad Fred Baker
- Re: Why Scopes? (was: Re: [saad] About saad) Melinda Shore
- Re: [saad] About saad Dave Crocker
- Re: [saad] About saad James Kempf
- Re: [saad] About saad Dave Crocker
- Re: Why Scopes? (was: Re: [saad] About saad) James Kempf
- RE: [saad] About saad Michel Py
- Re: Why Scopes? (was: Re: [saad] About saad) Melinda Shore
- Re: [saad] About saad Stephane Bortzmeyer
- Re: [saad] About saad Erik Nordmark
- Re: [saad] About saad Brian E Carpenter