A new Request for Comments is now available in online RFC libraries.
RFC 6305
Title: I'm Being Attacked by PRISONER.IANA.ORG!
Author: J. Abley, W. Maton
Status: Informational
Stream: IETF
Date: July 2011
Mailbox: joe.abley@icann.org,
wmaton@ryouko.imsb.nrc.ca
Pages: 8
Characters: 15287
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-dnsop-as112-under-attack-help-help-06.txt
URL: http://www.rfc-editor.org/rfc/rfc6305.txt
Many sites connected to the Internet make use of IPv4 addresses that
are not globally unique. Examples are the addresses designated in
RFC 1918 for private use within individual sites.
Hosts should never normally send DNS reverse-mapping queries for
those addresses on the public Internet. However, such queries are
frequently observed. Authoritative servers are deployed to provide
authoritative answers to such queries as part of a loosely
coordinated effort known as the AS112 project.
Since queries sent to AS112 servers are usually not intentional, the
replies received back from those servers are typically unexpected.
Unexpected inbound traffic can trigger alarms on intrusion detection
systems and firewalls, and operators of such systems often mistakenly
believe that they are being attacked.
This document provides background information and technical advice to
those firewall operators. This document is not an Internet Standards Track
specification; it is published for informational purposes.
This document is a product of the Domain Name System Operations Working Group of the IETF.
INFORMATIONAL: This memo provides information for the Internet community.
It does not specify an Internet standard of any kind. Distribution of
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