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Defeating Attacks which employ Forged ICMPv4/ICMPv6 Error Messages

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Fernando Gont , Ray Hunter , Jeroen Massar , Will (Shucheng) LIU
Last updated 2018-01-04 (Latest revision 2017-07-03)
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Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


Over the years, a number of attack vectors that employ forged ICMPv4/ ICMPv6 error messages have been disclosed and exploited in the wild. The aforementioned attack vectors do not require that the source address of the packets be forged, but do require that the addresses of the IPv4/IPv6 packet embedded in the ICMPv4/ICMPv6 payload be forged. This document discusses a simple, effective, and straightforward method for using ingress traffic filtering to mitigate attacks that use forged addresses in the IPv4/IPv6 packet embedded in an ICMPv4/ICMPv6 payload.


Fernando Gont
Ray Hunter
Jeroen Massar
Will (Shucheng) LIU

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