home *** CD-ROM | disk | FTP | other *** search
- **************************************************************************
- Security Bulletin 9202 DISA Defense Communications System
- 23 January 1992 Published by: DDN Security Coordination Center
- (SCC@NIC.DDN.MIL) 1-(800) 365-3642
-
- DEFENSE DATA NETWORK
- SECURITY BULLETIN
-
- The DDN SECURITY BULLETIN is distributed by the DDN SCC (Security
- Coordination Center) under DISA contract as a means of communicating
- information on network and host security exposures, fixes, and concerns
- to security and management personnel at DDN facilities. Back issues may
- be obtained via FTP (or Kermit) from NIC.DDN.MIL [192.112.36.5]
- using login="anonymous" and password="guest". The bulletin pathname is
- scc/ddn-security-yynn (where "yy" is the year the bulletin is issued
- and "nn" is a bulletin number, e.g. scc/ddn-security-9201).
- **************************************************************************
-
- First, we at the SCC hope you had a safe, secure, and happy new
- year.
-
- For some time now, the SCC has produced daily reports on TAC
- activity and suspected TAC Security Incidents. It has only
- been recently, however, that the SCC has been tasked by the DDN
- Network Security Officer (NSO) to perform follow-up on these
- suspected TAC Security Incidents with the user's Host
- Administrator (HA). As a result, HA's are now receiving a
- portion of the Security Incident Report as it applies to their
- user(s). The HA's are being asked to investigate these
- suspected security incidents and respond back to the SCC with
- the results of their inquiries. If a breach of DDN/TAC security
- has occurred, that user's TAC card will be deactivated. If the HA
- fails to respond, it will also cause that user's TAC card to be
- deactivated. The following acts are considered a breach of DDN/TAC
- security.
-
- Allowing your TAC access code to be used by anyone
- except yourself.
-
- Imbedding TAC access codes in software.
-
- Including TAC access codes in login files or scripts.
-
- Logging into a TAC for someone else.
-
- The TAC access codes are to be manually entered every time a user
- logs into the TAC. HA's can request TAC cards for anyone who has
- a genuine need to utilize the network. HA's can also request
- guest TAC cards for temporary users and for users who are waiting
- for their own TAC cards to arrive. In 1992, let's make the DDN
- more secure than it has ever been before.
-
-