It has been recognized for some time that breaking
the end-to-end model through the introduction of elements
like network address translators causes serious problems
in IP networks, and the IETF has had ongoing discussions
of those problems with an eye towards solving them. What
is probably not fully appreciated, however, is the extent
to which NAT and firewall-related problems are interfering
with the deployment of major applications, such as the
migration from circuit-based to packet-based telecommunications
networks. Some of us are beginning to suspect that it may
be time to bite the bullet and make certain network elements
visible to applications by creating explicit external interfaces.
To that end, we've requested a BOF session ("foglamps") for
the upcoming meeting in Adelaide, and have created a foglamps
mailing list on egroups.com (sorry). To subscribe, send
email to foglamps-subscribe(_at_)egroups(_dot_)com or use the web-based
interface at http://www.egroups.com.
Background reading would include:
draft-lear-foglamps-01.txt
draft-shore-h323-firewalls-00.txt
draft-rosenberg-sip-firewalls-00.txt
RFC 2775
draft-iab-ntwlyrws-over-02.txt
I'll send along an agenda as soon as it's finalized.
Melinda
--
Melinda Shore
Nokia IP Telephony
127 West State Street "Software longa,
Ithaca, NY 14850 hardware brevis"
+1 607 273 0724 (office)
+1 607 275 3610 (fax)
+1 607 227 4096 (mobile)
melinda(_dot_)shore(_at_)nokia(_dot_)com