@misc{rfc2709,
    series =    {Request for Comments},
    number =    2709,
    howpublished =  {RFC 2709},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC2709},
    url =       {https://www.rfc-editor.org/info/rfc2709},
    author =    {Pyda Srisuresh},
    title =     {{Security Model with Tunnel-mode IPsec for NAT Domains}},
    pagetotal = 11,
    year =      1999,
    month =     oct,
    abstract =  {This document describes a security model by which tunnel-mode IPsec security can be architected on NAT devices. This memo provides information for the Internet community.},
}