home *** CD-ROM | disk | FTP | other *** search
-
- ************************************************************************
- DDN MGT Bulletin 119 DISA DDN Defense Communications System
- 1 March 1993 Published by: DDN Network Info Center
- (NIC@NIC.DDN.MIL) (800) 365-3642
-
-
- DEFENSE DATA NETWORK
- MANAGEMENT BULLETIN
-
- The DDN MANAGEMENT BULLETIN is distributed online by the DDN Network
- Information Center under DISA contract as a means of communicating
- official policy, procedures and other information of concern to
- management personnel at DDN facilities. Back issues may be read
- through the TACNEWS server ("@n" command at the TAC) or may be
- obtained by FTP (or Kermit) from the NIC.DDN.MIL host [192.112.36.5]
- using login="anonymous" and password="guest". The pathname
- for bulletins is ddn-news/ddn-mgt-bulletin-nn.txt (where "nn" is the
- bulletin number).
- ************************************************************************
-
- PLEASE PASS TO ALL MILNET NODE SITE COORDINATORS.
- FOR DISA AREAS, PLEASE PASS AS A LOCAL AREASTA.
- THIS INFORMATION HAS ALSO BEEN RELEASED AS CONUSMILNETSTA 04/93
-
- Subject: Policy for Crypto Re-Keying of MILNET ISTs
-
- 1. One of the most common reasons for MILNET inter-switch trunk
- (IST) outages is crypto coordination problems at MILNET sites at HJ
- times. We have been working hard to reduce these occurences, with
- significant success. However, problems still occur. The best
- solution to this problem is for all MILNET ISTs to use OTAR.
- DISA has an ongoing effort to assist the net control stations (NCSs)
- to convert to OTAR. The MILNET POC for OTAR is SSgt Joe Buchanan,
- DSN 222-2771, commercial (703) 692-2771. We have found another
- partial solution. We have researched the crypto procedures required
- for MILNET ISTs not currently using OTAR. This bulletin restates
- existing policy for encryption in MILNET ISTs where OTAR is not
- implemented.
-
- 2. Standard NSA policy states that unclassified network circuits that
- do not use OTAR may use a monthly crypto period with no update.
- This means that the traffic encryption key (TEK) may be loaded into
- the crypto device monthly and no daily update is required. This
- bulletin establishes the monthly crypto period with no update as the
- standard for MILNET ISTs that are not using OTAR. This procedure
- should be implemented ASAP. The deadline for converting to this
- procedure is 19 Mar 1993.
-
- 3. Two procedures have been defined: 1) the procedure that must be
- followed when a circuit outage occurs and 2) for sites that are not
- manned seven days a week, the procedure for installing the next TEK
- when the first of the month occurs on a week-end or holiday
-
- a. If a circuit fails but the crypto equipment re-synchs
- automatically after restoral, loading of new TEK is not
- required. Please note that a KG-84A will retain key during
- power or circuit outages only if fresh fill-hold batteries are
- installed. If a circuit fails and the crypto equipment does not
- re-synch automatically, the "next up" segment of TEK will be
- loaded. In order to re-establish the normal period, the KG-84A
- will also be loaded on the first of the next month.
-
- b. When the first of the month occurs on a week-end or holiday at a
- site not manned during that time, the monthly loading of the TEK
- will be accomplished on the next duty day at a time established by
- the NCS. This situation should be coordinated with the MILNET
- monitoring center (1-800-451-7413).
-
- 4. DISA POCs for this topic are:
-
- Maj Ted A. Tatchio (DSN 222-2757, commercial 703-692-2757)
- email: milnetmgr@ddn-conus.ddn.mil
-
- Mr Rod McDaniel, DSN 222-7580, commercial 703-692-7580)
- email: cmcmgr@ddn-conus.ddn.mil
-
- 5. This CONUSMILNETSTA will remain in effect until cancelled by
- this office.
-
-
-