rfc2488.txt

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   satellite link are non-trivial.

   Data encryption at the physical and/or link layers can provide secure
   communication over satellite channels.  However, this still leaves
   traffic vulnerable to eavesdropping on networks before and after
   traversing the satellite link.  Therefore, end-to-end security
   mechanisms should be considered.  This document does not make any
   recommendations as to which security mechanisms should be employed.
   However, those operating and using satellite networks should survey
   the currently available network security mechanisms and choose those
   that meet their security requirements.

Acknowledgments

   This document has benefited from comments from the members of the TCP
   Over Satellite Working Group.  In particular, we would like to thank
   Aaron Falk, Matthew Halsey, Hans Kruse, Matt Mathis, Greg Nakanishi,
   Vern Paxson, Jeff Semke, Bill Sepmeier and Eric Travis for their
   useful comments about this document.

References

   [AFP98]   Allman, M., Floyd, S. and C. Partridge, "Increasing TCP's
             Initial Window", RFC 2414, September 1998.

   [AHKO97]  Mark Allman, Chris Hayes, Hans Kruse, and Shawn Ostermann.
             TCP Performance Over Satellite Links.  In Proceedings of
             the 5th International Conference on Telecommunication
             Systems, March 1997.

   [All97]   Mark Allman.  Improving TCP Performance Over Satellite
             Channels.  Master's thesis, Ohio University, June 1997.

   [All98]   Mark Allman.  On the Generation and Use of TCP
             Acknowledgments. ACM Computer Communication Review, 28(5),
             October 1998.




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RFC 2488         Enhancing TCP Over Satellite Channels      January 1999


   [Bra89]   Braden, R., "Requirements for Internet Hosts --
             Communication Layers", STD 3, RFC 1122, October 1989.

   [FF96]    Kevin Fall and Sally Floyd.  Simulation-based Comparisons
             of Tahoe, Reno and SACK TCP.  Computer Communication
             Review, July 1996.

   [FF98]    Sally Floyd, Kevin Fall.  Promoting the Use of End-to-End
             Congestion Control in the Internet.  Submitted to IEEE
             Transactions on Networking.

   [Flo94]   S. Floyd, TCP and Successive Fast Retransmits. Technical
             report, October 1994.
             ftp://ftp.ee.lbl.gov/papers/fastretrans.ps.

   [GJKFV98] Rohit Goyal, Raj Jain, Shiv Kalyanaraman, Sonia Fahmy,
             Bobby Vandalore, Improving the Performance of TCP over the
             ATM-UBR service, 1998.  Sumbitted to Computer
             Communications.

   [Jac90]   Van Jacobson.  Modified TCP Congestion Avoidance Algorithm.
             Technical Report, LBL, April 1990.

   [JBB92]   Jacobson, V., Braden, R. and D. Borman, "TCP Extensions for
             High Performance", RFC 1323, May 1992.

   [Jac88]   Van Jacobson.  Congestion Avoidance and Control.  In ACM
             SIGCOMM, 1988.

   [Kno93]   Knowles, S., "IESG Advice from Experience with Path MTU
             Discovery", RFC 1435, March 1993.

   [Mar78]   James Martin.  Communications Satellite Systems.  Prentice
             Hall, 1978.

   [MD90]    Mogul, J. and S. Deering, "Path MTU Discovery", RFC 1191,
             November 1990.

   [MM96]    Matt Mathis and Jamshid Mahdavi.  Forward Acknowledgment:
             Refining TCP Congestion Control.  In ACM SIGCOMM, 1996.

   [MMFR96]  Mathis, M., Mahdavi, J., Floyd, S. and A.  Romanow, "TCP
             Selective Acknowledgment Options", RFC 2018, October 1996.

   [Mon98]   M. J. Montpetit. TELEDESIC: Enabling The Global Community
             Interaccess. In Proc. of the International Wireless
             Symposium, May 1998.




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RFC 2488         Enhancing TCP Over Satellite Channels      January 1999


   [MSMO97]  M. Mathis, J. Semke, J. Mahdavi, T. Ott, "The Macroscopic
             Behavior of the TCP Congestion Avoidance Algorithm",
             Computer Communication Review, volume 27, number3, July
             1997.  available from
             http://www.psc.edu/networking/papers/papers.html.

   [Pos81]   Postel, J., "Transmission Control Protocol", STD 7, RFC
             793, September 1981.

   [PS97]    Craig Partridge and Tim Shepard.  TCP Performance Over
             Satellite Links.  IEEE Network, 11(5), September/October
             1997.

   [PSC]     Jamshid Mahdavi.  Enabling High Performance Data Transfers
             on Hosts.  http://www.psc.edu/networking/perf_tune.html.

   [SMM98]   Jeff Semke, Jamshid Mahdavi and Matt Mathis.  Automatic TCP
             Buffer Tuning.  In ACM SIGCOMM, August 1998.  To appear.

   [Sta94]   William Stallings.  Data and Computer Communications.
             MacMillian, 4th edition, 1994.

   [Ste97]   Stevens, W., "TCP Slow Start, Congestion Avoidance, Fast
             Retransmit, and Fast Recovery Algorithms", RFC 2001,January
             1997.

   [Stu95]   M. A. Sturza. Architecture of the TELEDESIC Satellite
             System. In Proceedings of the International Mobile
             Satellite Conference, 1995.






















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Authors' Addresses

   Mark Allman
   NASA Lewis Research Center/Sterling Software
   21000 Brookpark Rd.  MS 54-2
   Cleveland, OH  44135

   Phone: [phone]
   EMail: [e-mail]
   http://roland.lerc.nasa.gov/~mallman


   Daniel R. Glover
   NASA Lewis Research Center
   21000 Brookpark Rd.
   Cleveland, OH  44135

   Phone: [phone]
   EMail: [e-mail]


   Luis A. Sanchez
   BBN Technologies
   GTE Internetworking
   10 Moulton Street
   Cambridge, MA  02140
   USA

   Phone: [phone]
   EMail: [e-mail]





















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Full Copyright Statement

   Copyright (C) The Internet Society (1999).  All Rights Reserved.

   This document and translations of it may be copied and furnished to
   others, and derivative works that comment on or otherwise explain it
   or assist in its implementation may be prepared, copied, published
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   The limited permissions granted above are perpetual and will not be
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   This document and the information contained herein is provided on an
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   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
























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