Baselining is a method for analyzing computer network performance. He became particularly interested in computer network security. Most computers are also capable of booting over a computer network. This particularly applies to computer network security. Online games are video games played over a computer network. Onion routing is a technique for anonymous communication over a computer network. This is especially true of PVC-insulated telephone and computer network cables. Nortel made telecommunications, computer network equipment and software. Networking hardware typically refers to equipment facilitating the use of a computer network. Proxies allow users to make indirect network connections to other computer network services. Network architecture is the design of a computer network. A network simulator is software that predicts the behavior of a computer network. Network media refers to the communication channels used to interconnect nodes on a computer network. In 2013, Germany revealed the existence of their 60-person Computer Network Operation unit. It is used to provide access to the Internet or a private computer network.