On Mon, Oct 7, 2019 at 10:13 AM Brielle <br...@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 b...@herrin.us https://bill.herrin.us/
