"invalid port definition" error during Red Hat Enterprise Linux 6 Common Criteria installation

Issue

• When using the Red Hat provided kickstart script to provision Red Hat Enterprise Linux 6 (RHEL6) in Common Criteria evaluated configuration, and enabling the default firewall rules within the kickstart script, the installer will expose the following errors during installation:

  • /etc/sysconfig/system-config-firewall: option --port: invalid port definition: esp.
  • /etc/sysconfig/system-config-firewall: option --port: invalid port definition: ah.

• These errors lead to the system firewall not being configured properly.