--------------------------------------------------------------------- ANEWS-6 DCA Code 531 30 March 1981 (DCACODE535@ISI) (202) 692-6175 ARPANET NEWSLETTER --------------------------------------------------------------------- GREETINGS: Once again we provide "pearls of wisdom" on actions and planning for the ARPANET which directly concern your hosts and you as Liaison. Pleading ignorance of the items discussed will no longer be considered a valid excuse for liaison nonparticipation. CIRCUIT INSTALLATION We have had some problems recently with Telephone Company personnel arriving at a site to install a circuit, only to have the liaison refuse them entrance. When DCA issues a Telecommunications Service Request (TSR) for a new circuit, we provide an information copy to the liaison. Granted these TSRs are not always easily understandable since they are in a machine input format; however, block 401 is the 'remarks' section, and we normally attempt to explain in that section what is going on. You should keep all copies of TSRs for reference so that if the telephone company calls up to install, remove, or change a circuit, you are aware of what is going on. If you have any questions or do not have a record of the TSR, please call us or send us a letter. We will attempt to answer your questions and provide clarification. An example of a situation which has recently caused confusion is one in which a site has all of its host ports filled, and the Liaison there is puzzled as to why we are ordering an additional wideband circuit. The added circuit is needed for the planned expansion of the network which will require the installation of additional backbone circuits at existing sites (most nodes can take three or more). NODE RELOCATIONS Over the next two years, we will replace all of the H316s and H516s on the network with C/30's. If you are planning to move your existing node, you may want to plan to have the move coincide with the C/30 installation. If you do plan to move the node, please let your Sponsor know, so that he can advise us. The C/30 installation TSR will not cover the move of the supporting circuitry. Based upon the Spronsor's request we will write additional TSRs to move the backbone circuits, and any other circuits that we ordered, to the new location. Local circuit relocations are your responsiblity and will normally be performed through the telephone company and/or the local government telephone management office. TIP INVENTORY We recently put out new guidelines in a past newsletter on TIP inventory reporting. TIP Inventory Reports last quarter were noticeable by their absence. These reports are NOT opitonal. If there is no change to the previous report, so state. In addition, the NIC will now be responsible for maintaining the TIP inventory data base. Thus, all TIP Inventory Reports should go directly to the NIC with an information copy to DCA. NOTE: Those TIP ports for which TIP inventory information is not provided will be considered not in use and will be software disabled as of 1 August 1981. Ports can be reenabled by providing the required TIP inventory information to the NIC and DCA who, upon receipt of the information, will direct the NCC to reenable the port. 96 BIT HEADER The 96 bit header software has been fully implemented on the network. Congratulations and thanks to those of you who worked to make the cutover successful. Our next major netwide effort will be to cutover all hosts to the new DOD Standard Protocols by 1 January of 1983. This is the cutoff date and it will be enforced. Network implementation details will be made available in follow-on newsletters. TIP ACCESS The advent of lowcost, home computer systems has subjected the ARPANET to increased probing by computer freaks. We are implementing in the near future, a TIP Log-in which will provide additional network access control. At present, however, only procedural controls can be implemented. When TIP Liaison pass out TIP dial-up phone numbers, they should advise the user that the number is for his or her use only and should not be passed on to anyone else (co-worker, relative, etc.). It should also be pointed out that by passing out the number to unauthorized persons, that the user is denying service to himself. The unauthorized user can hog the dial-up port, thus preventing legitimate user access. Further, dial-up access may be cut off until the advent of TIP Log-in, for those sites where it is established that illegal use continues to cause problems. Thus it is in the user's best interests to keep his or her dial-in number secure. Maj. Joe Haughney DCA Code 531 Defense Communications Agency ---------- NOTE: Previous issues of the ARPANET Newsletter are online on the SRI-KL machine as anews-1.txt, anews-2.txt, etc. They may be FTPed from your local host using username 'anonymous' and password 'guest'.