rfc2624.txt

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   section that covers RPC security deals with individual user
   authentication along with data integrity and privacy issues. This
   section also covers negotiation of security mechanisms.  These
   sections should be consulted for additional discussion and detail.

10.1.  Denial of Service

   As with all services, the denial of service by either incorrect
   implementations or malicious agents is always a concern.  With the
   target of providing NFS version 4 for Internet use, it is all the
   more important that all aspects of the NFS version 4 protocol be
   reviewed for potential denial of service scenarios.  When found these
   potential problems should be mitigated as much as possible.













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11.  Bibliography

   [RFC1094]
   Sun Microsystems, Inc., "NFS: Network File System Protocol
   Specification", RFC 1094, March 1989.
   http://www.ietf.org/rfc/rfc1094.txt

   [RFC1510]
   Kohl, J. and C. Neuman, "The Kerberos Network Authentication
   Service (V5)", RFC 1510, September 1993.
   http://www.ietf.org/rfc/rfc1510.txt

   [RFC1813]
   Callaghan, B., Pawlowski, B. and P. Staubach, "NFS Version 3
   Protocol Specification", RFC 1813, June 1995.
   http://www.ietf.org/rfc/rfc1813.txt

   [RFC1831]
   Srinivasan, R., "RPC: Remote Procedure Call Protocol Specification
   Version 2", RFC 1831, August 1995.
   http://www.ietf.org/rfc/rfc1831.txt

   [RFC1832]
   Srinivasan, R., "XDR: External Data Representation Standard",
   RFC 1832, August 1995.
   http://www.ietf.org/rfc/rfc1832.txt

   [RFC1833]
   Srinivasan, R., "Binding Protocols for ONC RPC Version 2", RFC
   1833, August 1995.
   http://www.ietf.org/rfc/rfc1833.txt

   [RFC2025]
   Adams, C., "The Simple Public-Key GSS-API Mechanism (SPKM)",
   RFC 2025, October 1996.
   http://www.ietf.org/rfc/rfc2025.txt

   [RFC2054]
   Callaghan, B., "WebNFS Client Specification", RFC 2054, October
   1996.
   http://www.ietf.org/rfc/rfc2054.txt

   [RFC2055]
   Callaghan, B., "WebNFS Server Specification", RFC 2055, October
   1996.
   http://www.ietf.org/rfc/rfc2055.txt





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   [RFC2078]
   Linn, J., "Generic Security Service Application Program Interface,
   Version 2", RFC 2078, January 1997.
   http://www.ietf.org/rfc/rfc2078.txt

   [RFC2152]
   Goldsmith, D., "UTF-7 A Mail-Safe Transformation Format of Unicode",
   RFC 2152, May 1997.
   http://www.ietf.org/rfc/rfc2152.txt

   [RFC2203]
   Eisler, M., Chiu, A. and L.  Ling, "RPCSEC_GSS Protocol
   Specification", RFC 2203, August 1995.
   http://www.ietf.org/rfc/rfc2203.txt

   [RFC2222]
   Myers, J., "Simple Authentication and Security Layer (SASL)",
   RFC 2222, October 1997.
   http://www.ietf.org/rfc/rfc2222.txt

   [RFC2279]
   Yergeau, F., "UTF-8, a transformation format of ISO 10646",
   RFC 2279, January 1998.
   http://www.ietf.org/rfc/rfc2279.txt

   [RFC2246]
   Dierks, T. and C. Allen, "The TLS Protocols Version 1.0", RFC 2246,
   Certicom, January 1999.
   http://www.ietf.org/rfc/rfc2246.txt

   [RFC2401]
   Kent, S. and R. Atkinson, "Security Architecture for the Internet
   Protocol", RFC 2401, November 1998.
   http://www.ietf.org/rfc/rfc2401.txt

   [DCEACL]
   The Open Group, Open Group Technical Standard, "DCE 1.1:
   Authentication and Security Services," Document Number C311, August
   1997. Provides a discussion of DEC ACL structure and semantics.

   [HPFS]
   Les Bell and Associates Pty Ltd, "The HPFS FAQ,"
   http://www.lesbell.com.au/hpfsfaq.html

   [Hutson]
   Huston, L.B., Honeyman, P., "Disconnected Operation for AFS," June
   1993. Proc. USENIX Symp. on Mobile and Location-Independent
   Computing, Cambridge, August 1993.



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   [Kistler]
   Kistler, James J., Satyanarayanan, M., "Disconnected Operations in
   the Coda File System," ACM Trans. on Computer Systems, vol. 10, no.
   1, pp. 3-25, Feb. 1992.

   [Mummert]
   Mummert, L. B., Ebling, M. R., Satyanarayanan, M., "Exploiting Weak
   Connectivity for Mobile File Access," Proc. of the 15th ACM Symp.
   on Operating Systems Principles Dec. 1995.

   [Nagar]
   Nagar, R., "Windows NT File System Internals," ISBN 1565922492,
   O`Reilly & Associates, Inc.

   [Sandberg]
   Sandberg, R., D. Goldberg, S. Kleiman, D. Walsh, B.  Lyon, "Design
   and Implementation of the Sun Network Filesystem," USENIX
   Conference Proceedings, USENIX Association, Berkeley, CA, Summer
   1985.  The basic paper describing the SunOS implementation of the
   NFS version 2 protocol, and discusses the goals, protocol
   specification and trade-offs.

   [Satyanarayanan1]
   Satyanarayanan, M., "Fundamental Challenges in Mobile Computing,"
   Proc. of the ACM Principles of Distributed Computing, 1995.

   [Satyanarayanan2]
   Satyanarayanan, M., Kistler, J. J., Mummert L. B., Ebling M. R.,
   Kumar, P. , Lu,  Q., "Experience with disconnected operation in
   mobile computing environment," Proc. of the USENIX Symp. on Mobile
   and Location-Independent Computing, Jun. 1993.

   [Unicode1]
   "Unicode Technical Report #8 - The Unicode Standard, Version 2.1",
   Unicode, Inc., The Unicode Consortium, P.O. Box 700519, San Jose,
   CA 95710-0519 USA, September 1998
   http://www.unicode.org/unicode/reports/tr8.html

   [Unicode2]
   "Unsupported Scripts" Unicode, Inc., The Unicode Consortium, P.O.
   Box 700519, San Jose, CA 95710-0519 USA, October 1998
   http://www.unicode.org/unicode/standard/unsupported.html

   [XDSM]
   The Open Group, Open Group Technical Standard, "Systems Management:
   Data Storage Management (XDSM) API," ISBN 1-85912-190-X, January
   1997.




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   [XNFS]
   The Open Group, Protocols for Interworking: XNFS, Version 3W, The
   Open Group, 1010 El Camino Real Suite 380, Menlo Park, CA 94025,
   ISBN 1-85912-184-5, February 1998.
   HTML version available: http://www.opengroup.org

12.  Acknowledgments

   o    Brent Callaghan for content contributions.

13.  Author's Address

   Address comments related to this memorandum to:

   [e-mail] -or- [e-mail]

   Spencer Shepler
   Sun Microsystems, Inc.
   7808 Moonflower Drive
   Austin, Texas 78750

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




























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14.  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
   and distributed, in whole or in part, without restriction of any
   kind, provided that the above copyright notice and this paragraph are
   included on all such copies and derivative works.  However, this
   document itself may not be modified in any way, such as by removing
   the copyright notice or references to the Internet Society or other
   Internet organizations, except as needed for the purpose of
   developing Internet standards in which case the procedures for
   copyrights defined in the Internet Standards process must be
   followed, or as required to translate it into languages other than
   English.

   The limited permissions granted above are perpetual and will not be
   revoked by the Internet Society or its successors or assigns.

   This document and the information contained herein is provided on an
   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
   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.

Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.



















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