@misc{rfc3989,
    series =    {Request for Comments},
    number =    3989,
    howpublished =  {RFC 3989},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC3989},
    url =       {https://www.rfc-editor.org/info/rfc3989},
    author =    {Juergen Quittek and Martin Stiemerling and Tom Taylor},
    title =     {{Middlebox Communications (MIDCOM) Protocol Semantics}},
    pagetotal = 70,
    year =      2005,
    month =     feb,
    abstract =  {This memo specifies semantics for a Middlebox Communication (MIDCOM) protocol to be used by MIDCOM agents for interacting with middleboxes such as firewalls and Network Address Translators (NATs). The semantics discussion does not include any specification of a concrete syntax or a transport protocol. However, a concrete protocol is expected to implement the specified semantics or, more likely, a superset of it. The MIDCOM protocol semantics is derived from the MIDCOM requirements, from the MIDCOM framework, and from working group decisions. This memo provides information for the Internet community.},
}