The user identity, as opposed to an IP address, is an integral component of an effective security infrastructure. Knowing who is using each of the applications on your network, and who may have transmitted a threat or is transferring files, can strengthen security policies and reduce incident response times. User-ID™, a standard feature on the Palo Alto Networks firewall, enables you to leverage user information stored in a wide range of repositories. The following topics provide more details about User-ID and how to configure it: