@techreport{ietf-ipsec-heartbeats-01,
    number =    {draft-ietf-ipsec-heartbeats-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-ipsec-heartbeats/01/},
    author =    {Andrew Krywaniuk and Tero Kivinen},
    title =     {{Using Isakmp Heartbeats for Dead Peer Detection}},
    pagetotal = 31,
    year =      2000,
    month =     jul,
    day =       21,
    abstract =  {This document describes a method for sending heartbeat packets (sometimes called keep-alives) across an ISAKMP SA in order to detect when a peer has crashed or has become otherwise unreachable. A method for negotiating the heartbeat parameters is also provided.},
}