The network administrator is the day-to-day manager of a given network. They are responsible for monitoring the network’s performance, adding and replacing new equipment or software as needed. network administrators (and the technicians that work under them) manage user accounts, user groups, and machine accounts. They manage the deployment of new software applications to network clients. network administrators ensure that the network is secured against outside threats, and that client workstations have anti-virus and malware protection installed. They troubleshoot network issues that come up and make the necessary fixes as required. network administrators maintain email systems and Internet content filters for users.