ATG Portal is subject to the security settings specified within the ATG platform. PAF security settings are handled primarily from the administrator interface, although additional tags and methods are available to further maintain portal security from within individual gears and the PAF itself. For a more detailed discussion of security within the ATG platform, refer to the Managing Access Control chapter in the ATG Platform Programming Guide and the Working with the Dynamo User Directory chapter in the ATG Personalization Programming Guide.