RFC - 2827

Network Ingress Filtering: Defeating Denial of Service Attacks which employ IP Source Address Spoofing

Original:	ftp://ftp.isi.edu/in-notes/rfc2827.txt
Authors:	P. Ferguson [Cisco Systems, Inc.], D. Senie [Amaranth Networks Inc.]
Date:	May 2000
Category:	Best Current Practice [ BCP-38 ]

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Obsoletes:
RFC-2267	Network Ingress Filtering: Defeating Denial of Service Attacks which employ IP Source Address Spoofing (Obsoleted by RFC-2827)

Updated by:
RFC-3704 [BCP 84]	Ingress Filtering for Multihomed Networks

Referred by:	26 RFC
Refers to:	4 RFC

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Status

This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2000). All Rights Reserved.

Abstract

Recent occurrences of various Denial of Service (DoS) attacks which have employed forged source addresses have proven to be a troublesome issue for Internet Service Providers and the Internet community overall. This paper discusses a simple, effective, and straightforward method for using ingress traffic filtering to prohibit DoS attacks which use forged IP addresses to be propagated from 'behind' an Internet Service Provider's (ISP) aggregation point.

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