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Printable Version: RFC1244.PDF
RFC 1244 Site Security Handbook July 1991
and workstation. This includes explaining how to protect files
stored on the system, how to log out or lock the terminal or
workstation, and so on. Much of this information is typically
covered in the "beginning user" documentation provided by the
operating system vendor, although many sites elect to
supplement this material with local information.
If your site offers dial-up modem access to the computer
systems, special care must be taken to inform users of the
security problems inherent in providing this access. Issues
such as making sure to log out before hanging up the modem
should be covered when the user is initially given dial-up
access.
Likewise, access to the systems via local and wide-area
networks presents its own set of security problems which users
should be made aware of. Files which grant "trusted host" or
"trusted user" status to remote systems and users should be
carefully explained.
3.8.1.3 Determining Account Misuse
Users should be told how to detect unauthorized access to their
account. If the system prints the last login time when a user
logs in, he or she should be told to check that time and note
whether or not it agrees with the last time he or she actually
logged in.
Command interpreters on some systems (e.g., the UNIX C shell)
maintain histories of the last several commands executed.
Users should check these histories to be sure someone has not
executed other commands with their account.
3.8.1.4 Problem Reporting Procedures
A procedure should be developed to enable users to report
suspected misuse of their accounts or other misuse they may
have noticed. This can be done either by providing the name
and telephone number of a system administrator who manages
security of the computer system, or by creating an electronic
mail address (e.g., "security") to which users can address
their problems.
3.8.2 Educating the Host Administrators
In many organizations, computer systems are administered by a wide
variety of people. These administrators must know how to protect
their own systems from attack and unauthorized use, as well as how
Site Security Policy Handbook Working Group [Page 31]