In message <[email protected]>, Christian Huitema write
s:
>
> By the way, it should be noted that the only rationale, if any, for
> TCP spoofing in the satellite relays is the inadequacy of the end-to-end
> TCP implementation. The specificities of satellites and their interaction
> with transport protocols have been known for more than 15 years, and the
> cure is also very well known: use large windows, use selective
> acknowledgments. The only slightly researchy subject is the possible
> use of pacing mechanisms to avoid the swings caused by large windows.
> TCP support both large windows and selective acknowledgements. A user
> that opts for end to end encryption will still get good performances
> over satellite links if they also select proper TCP implementations.
>
> --
> Christian Huitema
> ----------
> See you at INET'98, Geneva 21-24,July 98 http://www.isoc.org/inet98/
Christian,
I trimmed things back to a sane Cc.
Proxy servers aka application gateways would be preferable to
snooping. The only good reason for either is where the delay and the
loss are introduced by different parts of the network. This can be
true for satellite where loss is introduced going through the Internet
and delay but relatively little loss is introduced by the satellite
leg of the journey. Of course with some types of proxy, such as http
proxy there may be caching advantages as well which completely avoid
the need to cross the long delay or higher loss leg.
Curtis
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