7-Apr-83 22:54:12-PST,4354;000000000001 Return-path: Mail-From: SMTP created at 7-Apr-83 22:50:23 Received: FROM SRI-NIC BY USC-ISIF.ARPA WITH TCP ; 7 Apr 83 22:51:37 PST Date: 7 Apr 1983 2132-PST From: FEINLER at SRI-NIC Subject: DoD Network Newsletter No. 23 To: ANEWS-DIST: ; cc: ddn-navy at BBNA, walker at SRI-NIC, sweeny at SRI-NIC, bpowell at BBNA ======================================================================== ANEWS-23 NETWORK INFO CENTER for 7 Apr 1983 DCA DDN Program Mgmt Office (NIC@SRI-NIC) (415) 859-3695 DoD NETWORK NEWSLETTER ======================================================================== TOPIC: - ARPANET IMPs and TACs ------------------------------------------------------------------------ On 30 March 83, a letter was sent to the Military Services and Government Agencies which participate in the ARPANET, announcing the establishment of the Defense Data Network - MILNET, and assumption of responsibility by the Defense Communications Agency for the IMPS and TACs, currently on the ARPANET, which are to become part of the MILNET. The text of that letter is quoted below. HEIDI B. HEIDEN Colonel, USA Program Manager Defense Data Network ------------------------------------------------------------------------ SUBJ: ESTABLISHMENT OF THE DEFENSE DATA NETWORK - UNCLASSIFIED SEGMENT (MILNET) 1. Effective 4 April 1983 the MILNET, a functional part of the Defense Data Network (DDN), is established. The MILNET, serving the computer systems listed in Enclosure 1, will provide reliable, survivable, unclassified communications between host computers throughout the United States and, in the near future, will expand services overseas. MILNET nodes and TACs transitioning to DCA management are listed in Enclosure 2. 2. Initially the MILNET will be fully integrated with the ARPANET until ARPANET and MILNET resources can be reconfigured into separate networks. The reconfiguration will be evolutionary, resulting in physically separate networks in early 1984. This separation is being undertaken for two reasons: a. To increase the level of resource protection afforded to MILNE hosts while providing reliable, survivable service; and, b. To return the ARPANET to its original purpose as a small experimental research network upon which to develop and test new computer and communications concepts and protocols. 3. Once the networks are separated all MILNET hosts will continue to exchange electronic mail with the ARPANET, and those MILNET hosts which require full internet communications with the ARPANET including file transfer and terminal access will be provided those services via mail bridges installed by the DCA. While mail bridges derive their name from the fact that they pass electronic mail between the two networks without restrictions, they also have the capability, on a host-pair permission basis, to function as full internet gateways. Four such bridges are being installed between the MILNET and the ARPANET to ensure that approved MILNET hosts have full communications services with the ARPANET where required. 4. MILNET hosts whose requirements dictate a more restricted operational environment may, at their request, be placed in a separate, closed community of interest. Hosts within this closed community will have full communications services among themselves, but will only have electronic mail service to and from hosts which are not part of the closed community. 5. Information concerning requests for new service will be forthcoming by separate letter. /signed/ 2 Enclosures a/s HEIDI B. HEIDEN Colonel, USA Program Manager Defense Data Network (The Enclosures are not included in the Newsletter since they contain information which is available in the file MILNET-ARPANET.LIST on the SRI-NIC (10.0.0.73) machine). -------