NIPRNet
The Non-classified Internet Protocol (IP) Router Network[1] (NIPRNet) is an IP network used to exchange unclassified information, including information subject to controls on distribution,[2] among the private network's users. The NIPRNet also provides its users access to the Internet.
It is one of the United States Department of Defense's three main networks. The others include SIPRNet and JWICS.[3]