Re: [BEHAVE] (no subject)
Simon Perreault <simon.perreault@viagenie.ca> Thu, 27 June 2013 13:55 UTC
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Date: Thu, 27 Jun 2013 15:55:24 +0200
From: Simon Perreault <simon.perreault@viagenie.ca>
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Subject: Re: [BEHAVE] (no subject)
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Le 2013-06-27 15:44, ivan c a écrit : >> I still haven't seen any explanation why the following excerpts do not >> apply. >> >> RFC 4787: >> >> REQ-3: A NAT MUST NOT have a "Port assignment" behavior of "Port >> overloading". >> >> RFC 5382: >> >> REQ-7: A NAT MUST NOT have a "Port assignment" behavior of "Port >> overloading" for TCP. > > Because some NATs would like to do port overloading, which is in > contradiction with these requirements. "Would like to" is not a valid reason. We need technical arguments. > See section 4. of > http://tools.ietf.org/html/draft-ietf-behave-requirements-update-00 . > You're mentioned as an author on this draft by the way. I'm not disagreeing with myself. I am only observing that this discussion still has not yielded any good technical argument that we could add to our draft. I have suggested that one condition where port overloading could be used is when the NAT knows that it will not disrupt the application protocol. For example, the protocols running on TCP port 80 and UDP port 53 (HTTP and DNS) are purely client-server and therefore would not be affected by port overloading. Allowing NATs to do port overloading for those ports only would probably solve the scalability problem since they account for a large portion of the traffic. Do we really need anything more complex? > In this post I explain why port overloading can be somewhat desirable: > http://www.ietf.org/mail-archive/web/behave/current/msg10896.html > I make the same point across a large number of my posts. We know that port overloading is desirable for a number of reasons. What we need to argue is why the undesirable effects of port overloading do not apply or can be ignored. Simon
- Re: [BEHAVE] (no subject) Senthil Sivakumar (ssenthil)
- Re: [BEHAVE] (no subject) Dan Wing
- [BEHAVE] REQ 1 and REQ 7 of RFC5382 were supposed… ivan c
- Re: [BEHAVE] REQ 1 and REQ 7 of RFC5382 were supp… Simon Perreault
- Re: [BEHAVE] REQ 1 and REQ 7 of RFC5382 were supp… ivan c
- Re: [BEHAVE] REQ 1 and REQ 7 of RFC5382 were supp… Simon Perreault
- Re: [BEHAVE] REQ 1 and REQ 7 of RFC5382 were supp… Senthil Sivakumar (ssenthil)
- Re: [BEHAVE] REQ 1 and REQ 7 of RFC5382 were supp… ivan c
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) Senthil Sivakumar (ssenthil)
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) Rajiv Asati (rajiva)
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] (no subject) Dan Wing
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] TCP port overloading, preservation a… ivan c
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] TCP port overloading, preservation a… Simon Perreault
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] TCP port overloading, preservation a… ivan c
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] TCP port overloading, preservation a… Simon Perreault
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) cb.list6
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] (no subject) Reinaldo Penno (repenno)
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] (no subject) Mark Andrews
- Re: [BEHAVE] (no subject) ivan c
- [BEHAVE] DNS vs port overloading Simon Perreault
- Re: [BEHAVE] (no subject) ietfdbh
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] DNS vs port overloading Mark Andrews
- Re: [BEHAVE] DNS vs port overloading Simon Perreault
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) Tom Taylor
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] DNS vs port overloading Mark Andrews
- Re: [BEHAVE] (no subject) ivan c
- Re: [BEHAVE] (no subject) Simon Perreault
- Re: [BEHAVE] DNS vs port overloading Simon Perreault
- [BEHAVE] UDP socket programming Simon Perreault
- Re: [BEHAVE] TCP port overloading, preservation a… ivan c
- Re: [BEHAVE] DNS vs port overloading ivan c