The system's access control program must log each system access attempt.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-941	GEN006600	SV-37757r1_rule	ECAR-1 ECAR-2 ECAR-3	Medium

Description
If access attempts are not logged, then multiple attempts to log on to the system by an unauthorized user may go undetected.

STIG	Date
Red Hat Enterprise Linux 5 Security Technical Implementation Guide	2014-04-02

Details

Check Text ( C-36954r1_chk )
The tcp_wrappers package is provided with the RHEL distribution. Other access control programs may be available but will need to be checked manually. Normally, tcpd logs to the mail facility in "/etc/syslog.conf". Determine if syslog is configured to log events by tcpd. Procedure: # more /etc/syslog.conf Look for entries similar to the following: mail.debug /var/adm/maillog mail.none /var/adm/maillog mail.* /var/log/mail authpriv.info /var/log/messages The above entries would indicate mail alerts are being logged. If no entries for mail exist, then tcpd is not logging this is a finding. If an alternate access control program is used and it does not provide logging of access attempts, this is a finding.

Check Text ( C-36954r1_chk )

The tcp_wrappers package is provided with the RHEL distribution. Other access control programs may be available but will need to be checked manually.

Normally, tcpd logs to the mail facility in "/etc/syslog.conf". Determine if syslog is configured to log events by tcpd.

Procedure:
# more /etc/syslog.conf

Look for entries similar to the following:
mail.debug /var/adm/maillog
mail.none /var/adm/maillog
mail.* /var/log/mail
authpriv.info /var/log/messages

The above entries would indicate mail alerts are being logged. If no entries for mail exist, then tcpd is not logging this is a finding.

If an alternate access control program is used and it does not provide logging of access attempts, this is a finding.

Fix Text (F-32219r1_fix)
Configure the access restriction program to log every access attempt. Ensure the implementation instructions for tcp_wrappers are followed so system access attempts are recorded to the system log files. If an alternate application is used, it must support this function.