nanog mailing list archives
Re: dns cache beyond ttl - viasat / exede
From: William Herrin <bill () herrin us>
Date: Mon, 7 Oct 2019 11:15:44 -0700
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/
Current thread:
- dns cache beyond ttl - viasat / exede Mike (Oct 07)
- Re: dns cache beyond ttl - viasat / exede Andrew Kerr (Oct 07)
- Re: dns cache beyond ttl - viasat / exede Brielle (Oct 07)
- Re: dns cache beyond ttl - viasat / exede William Herrin (Oct 07)
- Re: dns cache beyond ttl - viasat / exede Brielle (Oct 07)
- Re: dns cache beyond ttl - viasat / exede William Herrin (Oct 07)
- Re: dns cache beyond ttl - viasat / exede Brielle (Oct 08)
- Re: dns cache beyond ttl - viasat / exede William Herrin (Oct 07)
- Re: dns cache beyond ttl - viasat / exede Tony Finch (Oct 08)
- Re: dns cache beyond ttl - viasat / exede William Herrin (Oct 08)