A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Routing Area Working Group Working Group of the IETF.
Title : The Generalized TTL Security Mechanism (GTSM)
Author(s) : V. Gill, et al.
Filename : draft-ietf-rtgwg-rfc3682bis-03.txt
Pages : 16
Date : 2004-9-29
The use of a packet's Time to Live (TTL) (IPv4) or Hop Limit (IPv6)
to protect a protocol stack from CPU-utilization based attacks has
been proposed in many settings (see for example, RFC 2461). This
document generalizes these techniques for use by other protocols such
as BGP (RFC 1771), Multicast Source Discovery Protocol (MSDP),
Bidirectional Forwarding Detection, and Label Distribution Protocol
(LDP) (RFC 3036). While the Generalized TTL Security Mechanism (GTSM)
is most effective in protecting directly connected protocol peers, it
can also provide a lower level of protection to multi-hop sessions.
GTSM is not directly applicable to protocols employing flooding
mechanisms (e.g., multicast), and use of multi-hop GTSM should be
considered on a case-by-case basis. This document updates RFC 3682.
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