GEN008520 - The system must employ a local firewall.

Information

A local firewall protects the system from exposing unnecessary or undocumented network services to the local enclave. If a system within the enclave is compromised, firewall protection on an individual system continues to protect it from attack.

Solution

Configure the system to use a local firewall.
Use SMIT to load the IPSEC filesets.
#smit install
Use SMIT to configure filters.
#smit ipsec4

See Also

http://iasecontent.disa.mil/stigs/zip/U_STIG_Library_2015_07.zip