[59881] in North American Network Operators' Group
Re: rfc1918 ignorant
daemon@ATHENA.MIT.EDU (Lyndon Nerenberg)
Wed Jul 23 14:00:38 2003
Date: Wed, 23 Jul 2003 11:58:17 -0600
Cc: David Schwartz <davids@webmaster.com>, "" <variable@ednet.co.uk>,
"" <nanog@merit.edu>
To: Dave Temkin <dave@ordinaryworld.com>
From: Lyndon Nerenberg <lyndon@orthanc.ab.ca>
In-Reply-To: <Pine.LNX.4.50.0307231349300.27647-100000@ordinaryworld.com>
Errors-To: owner-nanog-outgoing@merit.edu
On Wednesday, July 23, 2003, at 11:50 AM, Dave Temkin wrote:
> Needs is a tough call. Plenty of networks block ICMP at the border and
> could very well be using 1918 addressing in between and you'd have no
> idea.
True enough, but my view of networks that blindly block all ICMP is
about the same as those that misuse 1918 addresses. And if they're
blocking ICMP specifically to hide their misuse of 1918, well ...
There are direct costs associated with dealing with networks that are
configured as described above. If you can't see inside to diagnose
problems, you can't call horsepucky when their support people start
feeding you a line. The cost of downtime and local support staff
quickly adds up. I've cancelled contracts in the past for this very
reason.
--lyndon
