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- INTERIM_MEETING_REPORT_
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- Reported by Fred Glover/DEC
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- Minutes of the Trusted Network File Systems Working Group (TNFS)
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- May 1992
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- Agenda
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- o Reviewed the recent modifications to the TNFS document (TNFS-001.2.02)
- o Reviewed the TKM document (TNFS-006.01.01)
- o Reviewed implementation status and issues
- o Discussed Lock Manager impact
- o Discussed TNFS auditable events
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- TNFS Document Review
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- The IETF TNFS document has been available for comments in the IETF Draft
- Directory and TNFS archive since July, 1991. During the May meeting,
- the Working Group made ``final'' wordsmithing modifications, and edits
- to the document. This concludes the work planned for the TNFS
- specification, and the next steps are to transition the document to
- Proposed Standard. Trusted Systems technology providers are encouraged
- to commence implementation based upon the current TNFS draft.
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- Final updates to the TNFS document include:
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- o Add vendor specific token to directory response structure, set
- label procedure arguments.
- o Change the arguments to the MLD procedure to reference operations
- rather than flags.
- o Add explicit indication within ACCESS and file open sections to
- identify conditions in which a client caching security attributes
- must revalidate the rights of a given client application (i.e., by
- calling ACCESS).
- o Add rationale indicating why security attribute tokens are not
- required to be included in the read directory response structure.
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- We spent some additional time discussing auditing. Conclusions include:
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- o Some environments may require that both client and server auditing
- is enabled in order to ensure full audit of events such as:
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- - First read (server audits; may need to check audit id and XID
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- in order to identify actual issuing PID if that is required).
- - Floating of objects (server only; client can't see).
- - Server override of privileges (server only; client can't see).
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- o The transaction ID is a possible ``key'' which can be used to
- correlate a client request with the server side procedure.
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- An updated document will be placed in the IETF and TNFS archives after
- an ``email'' review of the updates has been completed. In addition,
- Fred will contact our IETF Area Director, Dave Borman, to understand our
- ``next steps'' in the standardization process.
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- Token Manager Review
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- The TKM document was also reviewed. It now contains an attribute to
- token procedure. The following updates will be made to the document:
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- o Editorial (wordsmithing).
- o Length field added to string arguments.
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- The updated TKM document will be placed into the IETF Draft Directory
- (informational RFC) and the TSIG TNFS archive.
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- We have been reviewing both the TKM and MAC6 token mapping proposals.
- Our current recommendation is for each of these to be submitted as IETF
- informational RFCs. One of these would be identified to become the
- actual standard, once all of the IETF/TSIG token mapping requirements
- were understood and were accommodated by at least one of these
- proposals. We recommended that a new working group be formed which
- would assume the responsibility of collecting the requirements,
- reviewing all of the proposals, and making recommendations.
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- Implementation Status, Issues
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- The Working Group reviewed the progress of current implementation
- efforts. Two implementations are very ``close'' to conformance with the
- current version of the specification. We discussed testing
- possibilities for the end of this year. We have already identified a
- test plan, a set of ``non-mapped'' security attributes for testing, and
- a modified test routine to be used with the Connectathon test suite. An
- update of the tnfs.h file, describing all of the TNFS procedures and
- data structures, will be placed into the TSIG/IETF archive to facilitate
- development of additional implementations.
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- Lock Manager Update
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- Charlie Watt recently completed a review of the NFS lock manager and
- suggests that no changes appear to be required to the lock manager to
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- work in the TNFS environment. This confirmed the results of an earlier
- Working Group discussion and closes an action item. Thanks Charlie!
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- TNFS Auditable Events
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- We started the discussion of TNFS auditable events at this meeting.
- Mark Saake will be developing a document which describes this area.
- Conclusions reached at this meeting:
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- o The TNFS Group will focus on server side (i.e., protocol procedure)
- auditable events; we will expect that POSIX will identify the
- client side (i.e., application, API based) events and formats.
- o When the server receives a TNFS request, it can identify:
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- - Host address (and thus host)
- - File handle
- - Export structure
- - Procedure number
- - Version number
- - Credential information (ID info); result of subsequent
- authorization check (i.e., pass or fail).
- - Log entry and exit status of each called TNFS server procedure.
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- Next Meeting
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- The TNFS Group will plan to meet jointly with IETF and TSIG at the July
- meeting in Boston. At that meeting, we plan to:
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- o Present a summary to interested IETF attendees during a designated
- two hour time slot.
- o Review the ``final'' version of the TNFS documents (updated
- documents placed into the TNFS archive and IETF Drafts Directory:
- Fred, Fran, Carl, Ali).
- o Review the interoperability test opportunities, plans (all).
- o Review NFS test suite extension for TNFS (Fran).
- o Identify conforming implementations to support our request to
- transition our TNFS document (all).
- o Review identification of auditable TNFS events (Mark).
- o Place ``tnfs.h'', test plan, test attributes into TNFS archive
- (Fred).
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- The July meeting is planned for the 13th-17th at the Hyatt Regency in
- Cambridge, Massachusettes.
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- Attendees
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- Lida Carrier lida@apple.com
- Fran Fadden fran@decvax.dec.com
- Jonathon Fraser
- Fred Glover fglover@zk3.dec.com
- Ali Gohshan
- Brian Hardy
- Mark Saake saake@netcom.netcom.com
- Carl Smith cs@eng.sun.com
- T.T. Tao
- Charles Watt watt@sware.com
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