Unified network

Definition
A unified network is

"[a] connected collection of systems or networks that are accredited under a single System Security Plan (SSP); as a single entity; and by a single Cognizant Security Authority (CSA). A unified network can be as simple as a small standalone Local Area Network (LAN) operating at Protection Level 1, following a single security policy, accredited as a single entity, and administered by a single Information System Security Officer (ISSO). The network can be as complex as a collection of hundreds of LANs separated over a wide area but still following a single security policy accredited as a single CSA. The perimeter of each network encompasses all its hardware, software, and attached devices, and its boundary extends to all of its users."