A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : TCP Stealth Authors : Julian Kirsch Christian Grothoff Jacob Appelbaum Holger Kenn Filename : draft-kirsch-ietf-tcp-stealth-01.txt Pages : 10 Date : 2015-01-17 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. The IETF datatracker status page for this draft is: https://datatracker.ietf.org/doc/draft-kirsch-ietf-tcp-stealth/ There's also a htmlized version available at: http://tools.ietf.org/html/draft-kirsch-ietf-tcp-stealth-01 A diff from the previous version is available at: http://www.ietf.org/rfcdiff?url2=draft-kirsch-ietf-tcp-stealth-01 Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ _______________________________________________ I-D-Announce mailing list I-D-Announce@ietf.org https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft directories: http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt