Re: dns cache beyond ttl - viasat / exede

[William Herrin <bill () herrin us>]

On Mon, Oct 7, 2019 at 10:13 AM Brielle <bruns () 2mbit com> wrote:

> * Responding to three way handshake before the other end actually does
> (nmap -sT remote host ends up with every port being 'open' but closing
> connection right away)

This is the action of the TCP accelerator. TCP has a "long fat pipe"
problem where high-delay links (like a trip to geostationary orbit and
back) demolish throughput. To combat this, satellite protocols translate
TCP flows to a non-TCP or modified TCP protocol for transmission through
the satellite and then back to TCP in the modem.

Regards,
Bill Herrin

-- 
William Herrin
bill () herrin us
https://bill.herrin.us/