By default, the Session Border Controller's FTP, ICMP, SNMP, and Telnet services cannot be accessed via the media interfaces. In order to enable these services, the Session Border Controller…

By default, the Session Border Controller's FTP, ICMP, SNMP, and Telnet services cannot be accessed via the media interfaces. In order to enable these services, the Session Border Controller includes four fields that enable administrative traffic over the media interfaces. These four fields are collectively known as the "HIP". What does the acronym HIP stand for?