Title

Successful and unsuccessful logins and logouts must be logged. (Cat II impact)

Discussion

Monitoring and recording successful and unsuccessful logins assist in tracking unauthorized access to the system. Without this logging, the ability to track unauthorized activity to specific user accounts may be diminished.

Check Content

Determine if successful logons are being logged. # last | more Determine if unsuccessful logons are being logged. # more /var/adm/loginlog If the commands do not return successful and unsuccessful logins, this is a finding. Check the syslog daemon configuration for authentication logging. # egrep "auth\.(info|debug)" /etc/syslog.conf If there are no entries in syslog for the auth service, this is a finding.

Fix Text

Verify that login logs are handled correctly in the /etc/syslog.conf file. Edit the /etc/syslog.conf file and add one of the entries below. auth.debug /var/log/authlog OR auth.* /var/log/authlog Verify that service startup scripts for syslog and utmp (if present) are enabled.

Additional Identifiers

Rule ID: SV-226451r603265_rule

Vulnerability ID: V-226451

Group Title: SRG-OS-000470

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.