For ongoing monitoring of the network administrator's computer or server program is installed to monitor the network. It is desirable that the program does not require installing additional applications other machines, so as not to distract employees from their work. After installing this program scans the network and identifies all the devices in it. Thus, the administrator does not need to own make a list of hosts within its network. Poll hosts must take place remotely, so again, do not interrupt your workflow.

The program for monitoring network should be supported by sets of checks to help system administrator might have time to learn about any failures in the network and quickly eliminate them. First of all, a program for monitoring network should be able to continuously check the connection to different ports Protocol TCP / IP. Why is this important? First of all, so check availability and status of the server or any other host on the network. Periodically polling, for example, TCP-port, you can find out in time for termination of another device, without leaving your desk. This allows the system administrator to react in time and fix your problem. Second, by monitoring specific TCP ports can be early detection of malicious software. When you set up multiple tests on certain ports, network monitoring program must notify the administrator when opening a port of monitored by a range of ports (the list of ports used by malicious programs, can be found online). Most important is the monitoring device via ARP and NetBIOS protocols.