[48695] in North American Network Operators' Group
RE: How many protocols...
daemon@ATHENA.MIT.EDU (Mansey, Jon)
Wed Jun 12 17:19:28 2002
From: "Mansey, Jon" <Jon_Mansey@verestar.com>
To: "'cjclark@alum.mit.edu'" <cjclark@alum.mit.edu>
Cc: "'nanog@merit.edu'" <nanog@merit.edu>
Date: Wed, 12 Jun 2002 14:18:44 -0700
Errors-To: owner-nanog-outgoing@merit.edu
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Imagine the sceanrio, customer calls ISP, " hey I cant connect to my work
VPN through your connection", ISP, "Ahah, you need our business service, not
the $20/m home user service, let me put you through to a business service
sales person who'll be happy to take your $50/m, then you'll be able to work
from home"
> -----Original Message-----
> From: Crist J. Clark [mailto:crist.clark@attbi.com]
> Sent: Wednesday, June 12, 2002 1:34 PM
> To: Stephen Sprunk
> Cc: nanog@merit.edu
> Subject: Re: How many protocols...
>
>
>
> Stephen Sprunk wrote,
> > Thus spake "Magnus Boden" <mb@ozaba.cx>
> > > I wouldn't call it an isp if they only allowed tcp, udp
> and icmp. It
> > > should be all ip protocols.
> > >
> > > There can be a maximum of 256 of them. The isp shouldn't
> care what
> > > the ipheader->protocol field is set to.
> >
> > There is at least one ISP here in the US that filters protocol 50
> > (IPsec ESP). Does that mean they're really not an ISP?
>
> If they are an ISP they are an aggressively clueless ISP. Why
> on Earth would you block ESP? Some strange marketing ploy to
> charge more to allow people to use VPNs? Ever heard of
> transport mode? Does it actually cost them more to move ESP
> packets than TCP/UDP/ICMP packets? Are they under some
> mistaken impression ESP would be a bandwidth hog? Do they
> block GRE (protocol 47)? Do they block Checkpoint's FWZ
> (protocol 94)? Or any of the other zillion VPN protocols
> (some which ride over TCP and UDP too)?
>
> Exactly which ISP does this? They deserve some public
> humiliation for doing something that breathtakingly stupid to
> their customers.
> --
> Crist J. Clark | cjclark@alum.mit.edu
> | cjclark@jhu.edu
> http://people.freebsd.org/~cjc/ | cjc@freebsd.org
>
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