North American Network Operators Group|
Date Prev | Date Next |
Date Index |
Thread Index |
Author Index |
Re: BCP38 making it work, solving problems
- From: Edward B. Dreger
- Date: Mon Oct 11 09:51:15 2004
SD> Date: Sun, 10 Oct 2004 21:35:33 -0400 (EDT)
SD> From: Sean Donelan
SD> People think BCP38 means the packets could only originate
SD> from you.
Were BCP38 universal, this would be true. If one receives a
packet, it's either from the supposed source or a network that
allows spoofing. If no networks allow spoofing, it came from the
SD> [P]eople don't complain to the source of spoofed packet.
SD> People complain to IANA about attacks coming from Net-10.
They complain to the perceived source. Many Internet users are
shocked at how trivial it is to forge email/packet sources; I
guess they're used to services like caller ID where the end user
isn't [traditionally] given the power to spoof.
Then there's postal mail. At least sending spoofed packets is
more costly than IP, and end-user packets frequently are tagged
with an ingress label.
Everquick Internet - http://www.everquick.net/
A division of Brotsman & Dreger, Inc. - http://www.brotsman.com/
Bandwidth, consulting, e-commerce, hosting, and network building
Phone: +1 785 865 5885 Lawrence and [inter]national
Phone: +1 316 794 8922 Wichita
DO NOT send mail to the following addresses:
firstname.lastname@example.org -*- email@example.com -*- firstname.lastname@example.org
Sending mail to spambait addresses is a great way to get blocked.