[45379] in North American Network Operators' Group
Re: Fwd: SlashDot: "Comcast Gunning for NAT Users"
daemon@ATHENA.MIT.EDU (Ulf Zimmermann)
Thu Jan 31 18:03:42 2002
Date: Thu, 31 Jan 2002 14:54:06 -0800
From: Ulf Zimmermann <ulf@Alameda.net>
To: "E.B. Dreger" <eddy+public+spam@noc.everquick.net>
Cc: "Eric A. Hall" <ehall@ehsco.com>,
Bill Woodcock <woody@zocalo.net>,
"Martin J. Levy" <mahtin@mahtin.com>, nanog@merit.edu
Message-ID: <20020131145406.W13765@seven.alameda.net>
Reply-To: ulf@Alameda.net
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In-Reply-To: <Pine.LNX.4.20.0201312231480.15960-100000@www.everquick.net>; from eddy+public+spam@noc.everquick.net on Thu, Jan 31, 2002 at 10:40:10PM +0000
Errors-To: owner-nanog-outgoing@merit.edu
On Thu, Jan 31, 2002 at 10:40:10PM +0000, E.B. Dreger wrote:
> > This is hard because they are selling bandwidth ("watch
> > video") so they can't really cap the downloads, and they are
> > selling always-on so they can't measure by time conveniently
> > either. So they try to get the "bandwidth hogs" through
> > contractual means. Comcast prohibits VPNs, and prohibits
> > ~"attaching to another network", as examples. If you use too
> > much bandwidth, they will use these to drop your service.
>
> There it is... how many bits is the customer actually moving?
>
> As for the person who mentioned modifying Linux IP code to alter
> the port range... it's a simple set of sysctl tunables in BSD
> (at least FreeBSD).
And it just came to my mind, a solaris machine uses by default
high port numbers to open tcp connections:
root@backup:~[15] > ndd /dev/tcp tcp_smallest_anon_port
32768
That settings determines which port number it uses to open
outbound connection from what I know.
--
Regards, Ulf.
---------------------------------------------------------------------
Ulf Zimmermann, 1525 Pacific Ave., Alameda, CA-94501, #: 510-865-0204
You can find my resume at: http://seven.Alameda.net/~ulf/resume.html
