You can use this utility in a number of
ways. For example, changes in a statistic could indicate the activities of a cracker or the imminent
failure of a piece of hardware. The statistics can also indicate the success of performance modifications
you make or the impact of security features that you install. This utility uses the following
syntax:
NETSTAT [-a] [-b] [-e] [-f] [-n] [-o] [-p proto] [-r] [-s] [-t]
[interval]
The following list describes each of the command line arguments.
-a Displays all connections and listening ports for the current machine. The output includes
both TCP and User Datagram Protocol (UDP) connections. The table includes the protocol, local
address, foreign address, and state of the connection. To use this feature, simply type NetStat
??“a and press Enter.
-b Displays the application that created each connection or listening port. This feature is actually
one of the better ways to locate spyware, adware, and viruses on your system because these
applications usually communicate outside your machine. In most cases, the cracker doesn??™t
write the application in such a way that it disguises this information, so you can see the applications
you don??™t want on your machine quite quickly.
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