{{Portal, Free and open-source software Bit-Twist is a

libpcap In the field of computer network administration, pcap is an application programming interface (API) for capturing network traffic. While the name is an abbreviation of ''packet capture'', that is not the API's proper name. Unix-like syste ...

-based

packet generator A packet generator or packet builder is a type of software that generates random packets or allows the user to construct detailed custom packets. Depending on the network medium and operating system, packet generators utilize raw sockets, NDIS fun ...

and packet capture file modifier and replayer. It complements tcpdump, a packet capturing tool also built upon the packet capturing engine

. Bit-Twist allows you to regenerate packets from one or more pcap files. It also comes with a comprehensive pcap file editor to allow advance manipulation of packet information, e.g. fields in

Ethernet Ethernet () is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 198 ...

, ARP, IP, ICMP,

TCP TCP may refer to: Science and technology * Transformer coupled plasma * Tool Center Point, see Robot end effector Computing * Transmission Control Protocol, a fundamental Internet standard * Telephony control protocol, a Bluetooth communication s ...

, and UDP headers, prior to regenerating the packets onto the network. Bit-Twist is commonly used to simulate network traffic to test

firewall Firewall may refer to: * Firewall (computing), a technological barrier designed to prevent unauthorized or unwanted communications between computer networks or hosts * Firewall (construction), a barrier inside a building, designed to limit the spre ...

rules,

IDS IDS may refer to: Computing * IBM Informix Dynamic Server, a relational database management system * Ideographic Description Sequence, describing a Unihan character as a combination of other characters * Integrated Data Store, one of the first da ...

, and

IPS IPS, ips, or iPS may refer to: Science and technology Biology and medicine * ''Ips'' (genus), a genus of bark beetle * Induced pluripotent stem cell or iPS cells * Intermittent photic stimulation, a neuroimaging technique * Intraparietal sulcus ...

. Bit-Twist runs on

FreeBSD FreeBSD is a free and open-source Unix-like operating system descended from the Berkeley Software Distribution (BSD), which was based on Research Unix. The first version of FreeBSD was released in 1993. In 2005, FreeBSD was the most popular ...

NetBSD NetBSD is a free and open-source Unix operating system based on the Berkeley Software Distribution (BSD). It was the first open-source BSD descendant officially released after 386BSD was forked. It continues to be actively developed and is a ...

OpenBSD OpenBSD is a security-focused, free and open-source, Unix-like operating system based on the Berkeley Software Distribution (BSD). Theo de Raadt created OpenBSD in 1995 by forking NetBSD 1.0. According to the website, the OpenBSD project em ...

Mac OS X macOS (; previously OS X and originally Mac OS X) is a Unix operating system developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple's Mac (computer), Mac computers. Within the market of ...

Linux Linux ( or ) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged as a Linux distribution, which ...

, and

Microsoft Windows Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for serv ...

External links

Bit-Twist official website
Internet Protocol based network software