@techreport{kirsch-ietf-tcp-stealth-01,
    number =    {draft-kirsch-ietf-tcp-stealth-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-kirsch-ietf-tcp-stealth/01/},
    author =    {Julian Kirsch and Christian Grothoff and Jacob Appelbaum and Holger Kenn},
    title =     {{TCP Stealth}},
    pagetotal = 10,
    year =      2015,
    month =     jan,
    day =       17,
    abstract =  {TCP servers are visible on the Internet to unauthorized clients, as the existence of a TCP server is leaked in the TCP handshake before applications have a chance to authenticate the client. We present a small modification to the initial TCP handshake that allows TCP clients to replace the TCP ISN in the TCP SYN packet with an authorization token. Based on this information, TCP servers may then chose to obscure their presence from unauthorized TCP clients. This RFC documents the specific method for calculating the authorization token to ensure interoperability and to minimize interference by middleboxes. Mandating support for this method in operating system TCP/IP implementations will ensure that clients can connect to TCP servers protected by this method.},
}