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Pcap.Net Documentation

repository·master·Indexed 20 days ago

https://github.com/pcapdotnet/pcap.net

A .NET wrapper for WinPcap that enables C# and C++/CLI developers to perform network packet capture, injection, and analysis. It provides access to device management, BPF filtering, and packet storage, while bridging low-level C functions with .NET features like LINQ. Includes a packet interpretation framework supporting protocols such as Ethernet, IPv4, IPv6, TCP, UDP, DNS, and HTTP.

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What's inside Pcap.Net

  1. Overview of Pcap.Net

    master
    Pcap.Net is a .NET wrapper for WinPcap implemented using C++/CLI and C#. It provides access to WinPcap's capabilities within the .NET ecosystem and includes a built-in framework for packet interpretation. It is designed for developers needing to capture, send, or analyze network traffic in .NET applications.

  2. WinPcap capabilities in Pcap.Net

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    Pcap.Net exposes the following WinPcap features to .NET developers:

    • Device Management: Retrieve a list of Live Devices on the local host.
    • Packet Capture: Read packets from Live Devices (Network Interfaces) or Offline Devices (Pcap files).
    • Statistics: Access capture-wide statistics or per-packet statistics.
    • Sampling & Filtering: Use different sampling methods and apply Berkeley Packet Filters (BPF).
    • Packet Injection: Send packets directly to Live Devices or utilize WinPcap's send queues.
    • Storage: Dump captured packets to Pcap files.
    • Iteration: Use .NET Enumerables and LINQ to process received packets.

  3. Supported packet protocols for interpretation

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    Pcap.Net includes a packet interpretation framework that supports the following protocols:

    • Layer 2: Ethernet and VLAN tagging (802.1Q)
    • Layer 3: ARP, IPv4, IPv6, GRE, ICMP, IGMP
    • Layer 4: UDP, TCP
    • Application Layer: DNS, HTTP