Explanation/Reference:
Explanation: Check Point Identity Awareness Software Blade provides granular visibility of users, groups and machines, providing unmatched application and access control through the creation of accurate, identity-based policies. Centralized management and monitoring allows for policies to be managed from a single, unified console.
Reference: https://www.checkpoint.com/products/identity-awareness-software-blade/

Explanation
Introduction to the ICA
The ICA is a Certificate Authority which is an integral part of the Check Point product suite. It is fully compliant with X.509 standards for both certificates and CRLs. See the relevant X.509 and PKI documentation, as well as RFC 2459 standards for more information. You can read more about Check Point and PKI in the R76 VPN Administration Guide.
The ICA is located on the Security Management server. It is created during the installation process, when the Security Management server is configured.
References:

Explanation
To enable Identity Awareness:
Log in to R80 SmartConsole.
From the Gateways & Servers view, double-click the Security Gateway on which to enable Identity Awareness.
On the Network Security tab, select
The Identity Awareness Configuration wizard opens.
Select one or more options. These options set the methods for acquiring identities of managed and unmanaged assets.
AD Query - Lets the Security Gateway seamlessly identify Active Directory users and computers.
Browser-Based Authentication - Sends users to a Web page to acquire identities from unidentified users. If Transparent Kerberos Authentication is configured, AD users may be identified transparently.
Terminal Servers - Identify users in a Terminal Server environment (originating from one IP address).

Explanation/Reference:
Explanation: Parameters:

Reference: https://sc1.checkpoint.com/documents/R76SP/
CP_R76SP_Security_System_WebAdminGuide/105209.htm

Reference: http://dl3.checkpoint.com/paid/0c/0caa9c0daa67e0c1f2af3dd06790bc81/ CP_R77_Gaia_AdminGuide.pdf?HashKey=1479835768_76058f0fc4209e38bc801cd58a85d7c5&xtn=.pdf