{
  "draft": "draft-ietf-mpls-ldp-gtsm-09",
  "doc_id": "RFC6720",
  "title": "The Generalized TTL Security Mechanism (GTSM) for the Label Distribution Protocol (LDP)",
  "authors": [
    "C. Pignataro",
    "R. Asati"
  ],
  "format": [
    "TEXT",
    "HTML"
  ],
  "page_count": "8",
  "pub_status": "PROPOSED STANDARD",
  "status": "PROPOSED STANDARD",
  "source": "Multiprotocol Label Switching",
  "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).\n\n This specification uses a bit reserved in RFC 5036 and therefore updates RFC 5036. [STANDARDS-TRACK]",
  "pub_date": "August 2012",
  "keywords": [
    "GTSM",
    "LDP"
  ],
  "obsoletes": [],
  "obsoleted_by": [],
  "updates": [
    "RFC5036"
  ],
  "updated_by": [
    "RFC7552"
  ],
  "see_also": [],
  "doi": "10.17487/RFC6720",
  "errata_url": null
}