Skip to main content

A Proposal for ICMP 'Authentication Required' Messages

Document Type Expired Internet-Draft (individual)
Authors Avinash Lakhiani , Shawn Ostermann
Last updated 2002-10-08
Stream (None)
Intended RFC status (None)
Expired & archived
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)
This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at:


The current ICMP 'Destination Unreachable - Communication Administratively Prohibited' message conveys one bit of information: the gateway is administratively filtering your packets. This memo proposes the addition of an ICMP 'Authentication Required' response to provide the more specific message that packets are being administratively prohibited until successful authentication.


Avinash Lakhiani
Shawn Ostermann

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)