Checking for Open Network Connections with the NETSTAT Command

Ever curious about the network connections that your XP systems has open to resources on your local network or the Internet? If so, the NETSTAT utility has the answers. This tool will display information about current connections to and from your system, including details of port numbers in use, the names or addresses or remote systems, and the state of the connection. This is a great tool to gather information if you suspect that outside users may be connected to your system, such as via a Trojan horse application.

Author: Dan DiNicolo

Dan DiNicolo is a freelance author, consultant, trainer, and the managing editor of He is the author of the CCNA Study Guide found on this site, as well as many books including the PC Magazine titles Windows XP Security Solutions and Windows Vista Security Solutions. Click here to contact Dan.