Leader badge

Supported systems: Linux, BSD, macOS, and Windows.

Bit-Twist is a simple yet powerful libpcap-based Ethernet packet generator and packet editor. It is designed to complement tcpdump, which by itself has done a great job at capturing network traffic.

With Bit-Twist, you can now regenerate your captured traffic onto a live network! Packets are generated from tcpdump trace file (.pcap file). Bit-Twist also comes with a comprehensive trace file editor to allow you to change the contents of a trace file.

Bit-Twist is designed for exceptional speed! Utilizing a standard laptop with Linux system, you can edit 10 million packets in less than 5 seconds, and send the packets onto a live network, achieving throughput levels that match the maximum line rate of your NIC.

Packet generator is useful in simulating networking traffic or scenario, testing firewall, IDS, and IPS, and troubleshooting various network problems.

https://bittwist.sourceforge.io / ayeowch@gmail.com

Features

  • Highly portable: Bit-Twist runs on Linux, BSD, macOS, and Windows.
  • Send multiple trace files indefinitely with set interval, packets per second, or line rate between 1 Mbps to 10 Gbps using built-in token bucket algorithm.
  • Comprehensive trace file editor to edit most fields in Ethernet, ARP, IPv4, IPv6, ICMPv4, ICMPv6, TCP, and UDP headers. Templates are also included to generate packets with these headers without needing an existing trace file.
  • Automatic header checksum correction (with option to disable).
  • Send packets with custom QoS bits to test classification and queuing features of switches and routers.
  • Send packets with uniformly distributed random numbers for port numbers, TCP sequence numbers, etc.
  • Append custom payload (e.g. copy of hex stream from Wireshark) to existing packets after a specific header, handy for testing new protocols.
  • Send packets with truncated or expanded length in bytes, facilitating incremental throughput testing.
  • Highly scriptable: With proper manipulation, you can turn Bit-Twist into a versatile packet generator and packet editor tooling to meet your network testing requirements.

Project Samples

bittwist single CPU thread benchmark bittwist on-wire max. throughput benchmark Example 1: Throughput testing Example 2: Firewall testing Example 3: TCP SYN flood Example 4: ARP cache poisoning

Project Activity

See All Activity >

Categories

Networking

License

GNU General Public License version 2.0 (GPLv2)

Follow Bit-Twist (Packet Generator/Editor)

Bit-Twist (Packet Generator/Editor) Web Site

You Might Also Like
Get Advanced Threat Protection for Your Azure Workloads Icon
Get Advanced Threat Protection for Your Azure Workloads

FortiGate NGFW on Azure Enables You to Protect Your Workloads Beyond Basic Azure Security Services

FortiGate NGFW identifies and stops advanced threats with powerful application control, malware protection, web filtering, antivirus, and IPS technology. As the attack surface expands, FortiGate provides integrated and automated protection against emerging and sophisticated threats while securing hybrid or multi-cloud environments. Deploy today in Azure Marketplace.
Free 30-Day Trial
Rate This Project
Login To Rate This Project

User Ratings

5.0 out of 5 stars
★★★★★
★★★★
★★★
★★
★
2
0
0
0
0
ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 0 / 5

User Reviews

Filter Reviews:
★★★

There are no 3 star reviews.

Additional Project Details

Operating Systems

Linux, FreeBSD, BSD, Mac, Windows

Intended Audience

Advanced End Users

User Interface

Command-line

Programming Language

C

Related Categories

C Networking Software

Registered

2006-04-14
Report inappropriate content