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ddn-security-9203
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1992-02-03
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Security Bulletin 9203 DISA Defense Communications System
February 4, 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, & concerns
to security & 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-9203).
**************************************************************************
REGISTRATION OF TAC USERS
On 21 October 91, the Defense Information Systems Agency
(DISA) published DDN Security Bulletin 9120, which discussed a
problem with the timeliness of TAC users being re-registered
with the Network Information Center (NIC). This problem
surfaced as a result of MILNET hosts being deconfigured and
moved behind concentrators/gateways. In Security Bulletin
9120, the 15th of December had been set as the date the NIC
was to terminate network access to all TAC users utilizing
TAC cards registered to deconfigured hosts that had previously
been direct-connected to the DDN.
The purpose of this bulletin is to advise all concerned that
the 15 December 91 termination date has been extended. The
reason for this decision is simple--there was not enough
time to clear the logjam of users requiring re-registration
processing both at the MILDEP level and at the NIC. The
process of re-registering TAC users who now fall behind
concentrators/gateways had become a difficult and convoluted
problem. However, DISA and the Military Departments have had
several meetings on this issue and have come to agreement on
how to solve the problem long-term. Therefore, once new
registration procedures are implemented and re-registration
is moving smoothly, a new termination date for TAC cards
issued under the "old" deconfigured hosts will be set.
This will probably occur within the next few months and will
be done in conjunction with the annual re-registration
process.
If there are any questions, please contact Major Boyd at
Comm (703) 692-7580 or DSN 222-7580, e-mail to SCC@nic.ddn.mil.