Yoav Nir wrote:
Why not? While I agree that firewalls are diverse, they are all
made by vendors, and the big firewall vendors all have employees
who participate in the IETF. An IETF standard that allows firewall
traversal for legitimate traffic is very likely to be adopted by
all the vendors. It might not work with some bargain basement
home router you get at Wallmart, but even they eventually get
updated software.
According to your theory, a universal NAT traversal protocol
should already exists.
Masataka Ohta
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