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LAN Analyzer and Protocol Decoder - CommView

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Introduction
About CommView
What's New
Using the Program
Overview
Selecting Network Interface for Monitoring
Latest IP Connections
Packets
Logging
Viewing Logs
Rules
Advanced Rules
Alarms
Reconstructing TCP Sessions
Reconstructing UDP Streams
Searching Packets
Statistics and Reports
Using Aliases
Packet Generator
Visual Packet Builder
NIC Vendor Identifier
Scheduler
Using Remote Agent
Using RPCAP
Capturing Loopback Traffic
Port Reference
Setting Options
Frequently Asked Questions
VoIP Analysis
Introduction
Working with VoIP Analyzer
SIP and H.323 Sessions
RTP Streams
Registrations
Endpoints
Errors
Call Logging
Reports
Call Playback
Viewing VoIP Logs
Working with Lists in VoIP Analyzer
NVF Files
Advanced Topics
Capturing High Volume Traffic
Working with Multiple Instances
Running CommView in Invisible Mode
Command Line Parameters
Exchanging Data with Your Application
Custom Decoding
CommView Log Files Format
Sales and Support

CommView Log Files Format

CommView and CommView for WiFi use the data format described below for writing captured packets to .NCF files. This is an open data format that you can use for processing log files generated by CommView in your applications, as well as for exchanging data with your application directly (this method is described in this help file).

The packets are recorded consecutively. A 24-byte header, the structure of which is given below, prepends each packet body. All header fields with the length exceeding 1 byte use little-endian byte order.