If Network Security Services (NSS) is being used by SLEM 5 it must prohibit the use of cached authentications after one day.

If cached authentication information is out of date, the validity of the authentication information may be questionable.

If NSS is used by SLEM 5, verify it prohibits the use of cached authentications after one day with the following command:

Note: If NSS is not used on the operating system, this is not applicable.

     > sudo grep -i "memcache_timeout" /etc/sssd/sssd.conf
     memcache_timeout = 86400

If "memcache_timeout" has a value greater than "86400", the line is commented out, or the line is missing, this is a finding.

Configure NSS, if used by SLEM 5, to prohibit the use of cached authentications after one day.

Add or modify the following line in the "/etc/sssd/sssd.conf" file, below the line "[nss]":

memcache_timeout = 86400