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Awesome PCAPTools

A collection of tools developed by other researchers in the Computer Science area to process network traces. All the right reserved for the original authors.

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A wrapper/facade/whatever to enable/ease the use of jNetPcap (a libpcap based packet sniffing lib) in Clojure

2y 74d

Arkime (formerly Moloch) is an open source, large scale, full packet capturing, indexing, and database system.


A toolset for network packet capture in Cloud/Kubernetes and Virtualized environment.


Malicious HTTP traffic explorer


Protocol Analysis/Decoder Framework

2y 29d

fast, simple packet creation / parsing, with definitions for the basic TCP/IP protocols


A multi-threading tool to sniff TCP flow statistics and embedded HTTP headers from PCAP file. Each TCP flow carrying HTTP is exported to text file in json format.

2y 4m

A package for capturing and analyzing network flow data and intraflow data, for network research, forensics, and security monitoring.

1y 6m

A tool that provides a basic SQL-frontend to PCAP-files


A convertor from .pcap network capture files to HTTP Archive files.

7y 6m

PcapPlusPlus is a multiplatform C++ library for capturing, parsing and crafting of network packets. It is designed to be efficient, powerful and easy to use. It provides C++ wrappers for the most popular packet processing engines such as libpcap, WinPcap, DPDK and PF_RING.


A simple utility to classify packets into flows. It's so simple that only one task is aimed to finish. For Deep Packet Inspection or flow classification, it's so common to analyze the feature of one specific flow. I have make the attempt to use made-ready tools like tcpflows, tcpslice, tcpsplit, but all these tools try to either decrease the trace volume (under requirement) or resemble the packets into flow payloads (over requirement). I have not found a simple tool to classify the packets into flows without further processing. This is why this program is born.

2y 46d

Potiron - Normalize, Index and Visualize Network Capture

2y 69d

TCP/IP packet demultiplexer. Download from:


tcptrace is a tool written by Shawn Ostermann at Ohio University, for analysis of TCP dump files.

7y 10m

Process HTTP Pcaps With YARA

7y 9m

Yara is awesome, but sometimes you need to manipulate the data streams you're scanning in different ways.

6y 6m

An any-snarf program that processes application protocols (HTTP/FTP/...) from tcpdump or snoop files and stores session and file data

6y 10m

'Packet Capture Forensic Evidence eXtractor' is a tool that finds and extracts files from packet capture files

1y 85d

Scalpel is an open source data carving tool.

6y 7m

is a traffic visualiser, which captures traffic going through the host it is running from and displays streams sorted by bandwidth they use. Screenshot

Packet analyzer for network traffic capture.

ngrep strives to provide most of GNU grep's common features, applying them to the network layer. ngrep is a pcap-aware tool that will allow you to specify extended regular or hexadecimal expressions to match against data payloads of packets. It currently recognizes IPv4/6, TCP, UDP, ICMPv4/6, IGMP and Raw across Ethernet, PPP, SLIP, FDDI, Token Ring and null interfaces, and understands BPF filter logic in the same fashion as more common packet sniffing tools, such as tcpdump and snoop.

jNetPcap is a packet capturing library for Java that is available for Linux and Windows. jNetPcap leverages libpcap respectively WinPcap and employs the Java Native Interface (JNI) for using the functionality provided by libpcap/WinPcap.

Commercial): A multi-Gigabit network traffic recorder with indexing capabilities. n2disk is a network traffic recorder application. With n2disk you can capture full- sized network packets at multi-Gigabit rate (above 10 Gigabit/s on adequate hardware) from a live network interface, and write them into files without any packet loss.

OpenFPC is a set of scripts that combine to provide a lightweight full-packet network traffic recorder & buffering tool. Its design goal is to allow non-expert users to deploy a distributed network traffic recorder on COTS hardware while integrating into existing alert and log tools.

PF_RING is a new type of network socket that dramatically improves the packet capture speed. Available for Linux kernels 2.6.32 and newer. No need to patch the kernel. PF_RING-aware drivers for increased packet capture acceleration.


Tele Traffic Tapper) is yet another descendant of tcpdump but it is capable of real-time, graphical, and remote traffic-monitoring. ttt won't replace tcpdump, rather, it helps you find out what to look into with tcpdump. ttt monitors the network and automatically picks up the main contributors of the traffic within the time window. The graphs are updated every second by default.


It's a reliable piece of software, quite solid and able to generate flow records from pcap. This is very nice for indexing huge pcap or even doing packet capture. The recent version can even extract payloads and put in the flow records.

AIEngine is a next generation interactive/programmable Python/Ruby/Java/Lua packet inspection engine with capabilities of learning without any human intervention, NIDS(Network Intrusion Detection System) functionality, DNS domain classification, network collector, network forensics and many others.


is an open-source, Unix-based Network Intrusion Detection System (NIDS) that passively monitors network traffic and looks for suspicious activity. Bro detects intrusions by first parsing network traffic to extract its application- level semantics and then executing event-oriented analyzers that compare the activity with patterns deemed troublesome. Its analysis includes detection of specific attacks (including those defined by signatures, but also those defined in terms of events) and unusual activities (e.g., certain hosts connecting to certain services, or patterns of failed connection attempts).

CapAnalysis is a web visual tool for information security specialists, system administrators and everyone who needs to analyze large amounts of captured network traffic. A live web demo is available for testing.

is a software suite developed by CAIDA to analyze data collected by passive Internet traffic monitors. It provides a programming library libcoral, similar to libpcap with extensions for ATM and other network types, which is available from both C and Perl.

DPDK is a set of libraries and drivers for fast packet processing.

External Capture) is a distributed network sniffer with a web front- end. Ecap was written many years ago in 2005, but a post on the tcpdump-workers mailing list requested a similar application... so here it is. It would be fun to update it and work on it again if there's any interest.

is a graphical network monitor for Unix modeled after etherman. Featuring link layer, ip and TCP modes, it displays network activity graphically. Hosts and links change in size with traffic. Color coded protocols display. It supports Ethernet, FDDI, Token Ring, ISDN, PPP and SLIP devices. It can filter traffic to be shown, and can read traffic from a file as well as live from the network.

summarizes TCP/IP dump files into a self-describing ASCII format easily readable by humans and programs. Ipsumdump can read packets from network interfaces, from tcpdump files, and from existing ipsumdump files. It will transparently uncompress tcpdump or ipsumdump files when necessary. It can randomly sample traffic, filter traffic based on its contents, anonymize IP addresses, and sort packets from multiple dumps by timestamp. Also, it can optionally create a tcpdump file containing actual packet data. It's also convenient to work with CLICK as a inserted module.


The Internet Traffic Archive is a moderated repository to support widespread access to traces of Internet network traffic, sponsored by ACM SIGCOMM. The traces can be used to study network dynamics, usage characteristics, and growth patterns, as well as providing the grist for trace- driven simulations. The archive is also open to programs for reducing raw trace data to more manageable forms, for generating synthetic traces, and for analyzing traces.

is a high level library for C++ designed to make easier the creation and decoding of network packets. It is able to craft or decode packets of most common network protocols, send them on the wire, capture them and match requests and replies.

is a collection of routines to help with the construction and handling of network packets. It provides a portable framework for low-level network packet shaping, handling and injection. Libnet features portable packet creation interfaces at the IP layer and link layer, as well as a host of supplementary and complementary functionality. Using libnet, quick and simple packet assembly applications can be whipped up with little effort.

designed by Rafal Wojtczuk, is an implementation of an E-component of Network Intrusion Detection System. It emulates the IP stack of Linux 2.0.x. Libnids offers IP defragmentation, TCP stream assembly and TCP port scan detection. The most valuable feature of libnids is reliability. A number of tests were conducted, which proved that libnids predicts behaviour of protected Linux hosts as closely as possible.

now has a colorscheme included for monitoring the tcpdump output. It can also filter, convert timestamps to timestrings and much more.

NETwork DUmp data Displayer and Editor). From their webpage, "it is a GUI-based tool that allows you to make detailed changes to packets in tcpdump tracefiles."

is a framework that allows to easily build tools that can interact with network traffic. Following a script, traffic can be injected into the network, and decisions can be taken, and acted upon, based on received network traffic. An interpreted language provides branching and high-level control structures to direct the interaction with the network. Network Expect uses libpcap for packet capture and libwireshark (from the Wireshark project) for packet dissection tasks. (GPL, BSD/Linux/OSX).

Ntop is a network traffic probe that shows the network usage, similar to what the popular top Unix command does. ntop is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform and on Win32 as well.

Ntopng is the next generation version of the original ntop, a network traffic probe that shows the network usage, similar to what the popular top Unix command does. ntop is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform, MacOSX and on Win32 as well.

A Python wrapper for tshark, allowing python packet parsing using wireshark dissectors. There are quite a few python packet parsing modules, this one is different because it doesn't actually parse any packets, it simply uses tshark's (wireshark command-line utility) ability to export XMLs to use its parsing.

Sanitize is a collection of five Bourne shell scripts for reducing tcpdump traces in order to address security and privacy concerns, by renumbering hosts and stripping out packet contents. Each script takes as input a tcpdump trace file and generates to stdout a reduced, ASCII file in fixed-column format.

Scapy is a powerful interactive packet manipulation program.

Makes output from the tcpdump program easier to read and parse.

Snort is an open source network intrusion prevention and detection system (IDS/IPS) developed by Sourcefire, now owned by Cisco. Combining the benefits of signature, protocol and anomaly- based inspection, Snort is the most widely deployed IDS/IPS technology worldwide. With millions of downloads and approximately 500,000 registered users, Snort has become the de facto standard for IPS.

Socket Sentry is a real-time network traffic monitor for KDE Plasma in the same spirit as tools like iftop and netstat.

Suricata is a free and open source, mature, fast and robust network threat detection engine. The Suricata engine is capable of real time intrusion detection (IDS), inline intrusion prevention (IPS), network security monitoring (NSM) and offline pcap processing.

TCP-Reduce is a collection of Bourne shell scripts for reducing tcpdump traces to one-line summaries of each TCP connection present in the trace. The scripts look only at TCP SYN/FIN/RST packets. Connections without SYN packets in the trace (such as those on- going at the beginning of the trace) will not appear in the summary. Garbaged packets (those missing some of their contents) are reported to stderr as bogon's and are discarded. Occasionally the script gets fooled by retransmissions with altered sequence numbers, and reports erroneous huge connection sizes - always check large connections (say 100 MB or more) for plausibility.

Tcpdpriv is program for eliminating confidential information (user data and addresses) from packets collected on a network interface (or, from trace files created using the -w argument to tcpdump). Tcpdpriv removes the payload of TCP and UDP, and the entire IP payload for other protocols. It implements several address scrambling methods; the sequential numbering method and its variants, and a hash method with preserving address prefix.

Tracelook is an Tcl/TK program for graphically viewing the contents of trace files created using the -w argument to tcpdump. Tracelook should look at all protocols, but presently only looks at TCP connections. The program is slow and uses system resources prodigiously.

Replays a pcap file on an interface using libnet.

A tool to break a single libpcap packet trace into some number of sub- traces, breaking the trace along TCP connection boundaries so that a TCP connection doesn't end up split across two sub-traces. This is useful for making large trace files tractable for in- depth analysis and for subsetting a trace for developing analysis on only part of a trace.

Tcpstat reports certain network interface statistics much like vmstat does for system statistics. tcpstat gets its information by either monitoring a specific interface, or by reading previously saved tcpdump data from a file.

TraceWrangler is a network capture file toolkit running on Windows (or on Linux, using WINE) that supports PCAP as well as the new PCAPng file format, which is now the standard file format used by Wireshark. The most prominent use case for TraceWrangler is the easy sanitization and anonymization of PCAP and PCAPng files (sometimes called "trace files", "capture files" or "packet captures"), removing or replacing sensitive data while being easy to use.

A passive sniffer able to provide several insight on the traffic patterns at both the network and transport levels with a tremendous set of flow features.

A wonderful collection of tools built on libtrace to process network traffic, which is from The University of Waikato. I love this project!

An extract of a message from Guy Harris on state of WinPcap and WinDump.

WireEdit is a free desktop WYSIWYG editor for network packets. It allows editing any stack layer as "rich text" without having any knowledge of packets syntax and encoding rules. The input and output file format is Pcap.

The well-known tool suit to support packet analyzer and protocol decoder. It also includes a few practical tools and scripts to support most of the common usage.

The program xplot was written in the late 1980s to support the analysis of TCP packet traces.

dnsgram is a debugging tool for intermittent resolver failures. it takes one or more input PCAP files and generates statistics on 5 second segments allowing the study of intermittent resolver issues.

Dnsreplay takes recorded questions and answers and replays them to the specified nameserver and reporting afterwards which percentage of answers matched, were worse or better. Then compares the answers and some other metrics with the actual ones with those found in the dumpfile.

dnsscan takes one or more INFILEs in PCAP format and generates a list of the number of queries per query type.

dnsscope takes an input PCAP and generates some simple statistics outputs these to console.

dnswasher takes an input file in PCAP format and writes out a PCAP file, while obfuscating end-user IP addresses. This is useful to share data with third parties while attempting to protect the privacy of your users.

Dsniff is a collection of tools for network auditing and penetration testing. dsniff, filesnarf, mailsnarf, msgsnarf, urlsnarf, and webspy passively monitor a network for interesting data (passwords, e-mail, files, etc.). arpspoof, dnsspoof, and macof facilitate the interception of network traffic normally unavailable to an attacker (e.g, due to layer-2 switching). sshmitm and webmitm implement active monkey-in-the-middle attacks against redirected SSH and HTTPS sessions by exploiting weak bindings in ad-hoc PKI.

Extract particular kind of files using headers.

Justniffer is a network protocol analyzer that captures network traffic and produces logs in a customized way, can emulate Apache web server log files, track response times and extract all "intercepted" files from the HTTP traffic.

Trach and reassemble TCP streams

Extract files from network

The goal of Xplico is extract from an internet traffic capture the applications data contained. For example, from a pcap file Xplico extracts each email (POP, IMAP, and SMTP protocols), all HTTP contents, each VoIP call (SIP), FTP, TFTP, and so on. Xplico isn't a network protocol analyzer. Xplico is an open source Network Forensic An alysis Tool (NFAT). Xplico is released under the GNU General Public License and with some scripts under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0) License.

Capture tools

USB packet capture for Windows



Some set of scripts to unpack odin packets into separate files

3y 6m

Hadoop library to read packet capture (PCAP) files


A distribution of BPF for Ultrix 4.2, with both source code and binary modules.

Exploiting Global Data-flow Optimization in a Generalized Packet Filter Architecture By Andrew Begel, Steven McCanne, and Susan Graham.

is a program for synthesizing a type of self-similar process known as fractional Gaussian noise. The program is fast but approximate. Fractional Gaussian noise is only one type of self-similar process. When using this program for synthesizing network traffic, you must keep in mind that it may be that the traffic you seek is better modeled using one of the other processes.

An open source security oriented

It becomes increasingly important for both network researchers and operators to know the trend of network traffic and to find anomaly in their network traffic. This paper describes an on-going effort within the WIDE project to collect a set of free tools to build a traffic data repository containing detailed information of our backbone traffic. Traffic traces are collected by tcpdump and, after removing privacy information, the traces are made open to the public. We review the issues on user privacy, and then, the tools used to build the WIDE traffic repository. We will report the current status and findings in the early stage of our IPv6 deployment.