The operating system must terminate the network connection associated with a communications session at the end of the session or after 10 minutes of inactivity.

This requirement applies to both internal and external networks. Terminating network connections associated with communications sessions means de-allocating associated TCP/IP address/port pairs at the operating system level. The time period of inactivity may, as the organization deems necessary, be a set of time periods by type of network access or for specific accesses.