This command-line tool allows a system administrator to monitor
packets on a LAN and write the information to a log file. NetCap
uses the Network Monitor Driver to sniff packets on the local
segment that fit its filter criteria.
NetCap helps you capture frames directly from the network
traffic data stream and examine them. You can use this information
to analyze ongoing patterns of use and diagnose specific network
problems.
Frames (also known as packets) are packages of information
transmitted as a single unit over a network. Every frame follows
the same basic organization and contains the following:
- Control information such as synchronizing characters
- Source and destination addresses
- Protocol information
- An error-checking value
- A variable amount of data
