RFC 6720
The Generalized TTL Security Mechanism (GTSM) for the Label Distribution Protocol (LDP), August 2012
- Canonical URL:
- https://www.rfc-editor.org/rfc/rfc6720.txt
- File formats:
- Status:
- PROPOSED STANDARD
- Updates:
- RFC 5036
- Updated by:
- RFC 7552
- Authors:
- C. Pignataro
R. Asati - Stream:
- IETF
- Source:
- mpls (rtg)
DOI: 10.17487/RFC6720
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Abstract
The Generalized TTL Security Mechanism (GTSM) describes a generalized use of a packet's Time to Live (TTL) (IPv4) or Hop Limit (IPv6) to verify that the packet was sourced by a node on a connected link, thereby protecting the router\'s IP control plane from CPU utilization-based attacks. This technique improves security and is used by many protocols. This document defines the GTSM use for the Label Distribution Protocol (LDP). This specification uses a bit reserved in RFC 5036 and therefore updates RFC 5036. [STANDARDS-TRACK]
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.