Claimed elegance is based on a very bold assumption that the NAT device preserves the source port of outbound connection.
Hardly the case in even half of typical deployment cases.
Claimed elegance is based on a very bold assumption that the NAT device preserves the source port of outbound connection.
Hardly the case in even half of typical deployment cases.
I like your comment, but it seems the author acknowledged this as a caveat to the algorithm.
>Many home routers try to preserve the source port in external mappings. This is a property called “equal delta mapping” – it won’t work on all routers but for our algorithm we’re sacrificing coverage for simplicity.
So to what percentage is this coverage sacrificed exactly? No idea. Not as useful if the percentage is high, as you are implying.
It’s the same assumption is required for any hole punching handshake (including STUN).
> This is a property called “equal delta mapping”
FWIW I’ve worked in computer networking for 20 years and have never heard it called this. This blog is the only source that comes up when I search for that exact term. I wonder where the author got it from.
I wonder how many new technical terms are going to be created by LLMs - not to say that this post was N necessarily written by an LLM (but, who knows!)