A tool to measure TCP/UDP transport layer throughput between hosts.

A commandline web screenshot and information gathering tool.

horst is a small, lightweight IEEE802.11 WLAN analyzer with a text interface.
Its basic function is similar to tcpdump, Wireshark or Kismet, but it's much
smaller and shows different, aggregated information which is not easily
available from other tools. It is made for debugging wireless LANs with a
focus on getting a quick overview instead of deep packet inspection and has
special features for Ad-hoc (IBSS) mode and mesh networks.
It can be useful to get a quick overview of what's going on on all wireless
LAN channels and to identify problems.

Also known as cURL and wget command Alternative.
The goal of HTTPie is to make CLI interaction with web services as human-friendly as possible.

Transparently tunnel IP traffic through ICMP echo and reply packets.

ipv6gen features:
generates prefix list of certain length from given prefix
via one of the 3 methods described in RFC 3531

The SI6 Networks' IPv6 toolkit is a set of IPv6 security and
trouble-shooting tools, that can send arbitrary IPv6-based
packets.

List of tools:
* addr6: An IPv6 address analysis and manipulation tool.
* flow6: A tool to perform a security asseessment of the IPv6 Flow
Label.
* frag6: A tool to perform IPv6 fragmentation-based attacks and to
perform a security assessment of a number of fragmentation-related
aspects.
* icmp6: A tool to perform attacks based on ICMPv6 error messages.
* jumbo6: A tool to assess potential flaws in the handling of IPv6
Jumbograms.
* na6: A tool to send arbitrary Neighbor Advertisement messages.
* ni6: A tool to send arbitrary ICMPv6 Node Information messages,
and assess possible flaws in the processing of such packets.
* ns6: A tool to send arbitrary Neighbor Solicitation messages.
* ra6: A tool to send arbitrary Router Advertisement messages.
* rd6: A tool to send arbitrary ICMPv6 Redirect messages.
* rs6: A tool to send arbitrary Router Solicitation messages.
* scan6: An IPv6 address scanning tool.
* tcp6: A tool to send arbitrary TCP segments and perform a variety
of TCP-based attacks.

IRTT (Isochronous Round-Trip Tester) IRTT measures round-trip time,
one-way delay and other metrics using UDP packets sent on a fixed period,
and produces both user and machine parseable output.

This implementation provides LLDP sending and reception, supports VLAN
and includes an SNMP subagent that can interface to an SNMP agent
through AgentX protocol.

LLDP is an industry standard protocol designed to supplant proprietary
Link-Layer protocols such as Extreme EDP (Extreme Discovery Protocol)
and CDP (Cisco Discovery Protocol). The goal of LLDP is to provide an
inter-vendor compatible mechanism to deliver Link-Layer notifications
to adjacent network devices.

This daemon is also able to deal with CDP, FDP, SONMP and EDP
protocol. It also handles LLDP-MED extension.

mcjoin can be used to join IPv4 multicast groups, display
progress as multicast packets are received, and also send
multicast packets on select groups.

mcjoin can help verify intended IGMP snooping functionality
in layer-2 bridges/switches, as well as test forwarding of
multicast in static or dynamic multicast routing setups.

MGEN provides the ability to perform IP network performance tests
and measurements using TCP and UDP/IP traffic. Test messages
can be generated, received and logged. MGEN offers control over
all network parameters and timing of these messages. All this can be
done either via the command line or defined in a file format for
greater reproducibility.

msoak is a utility to simultaneously subscribe to an arbitrary
number of topics on any number of MQTT brokers and optionally
modify or normalize received payloads before printing them out.
This utility was created for being able to back up to a central
location messages received by a number of brokers; instead of
launching (and having to monitor success of) a large number of
mosquitto_sub(1) programs, msoak took on the job.

msoak uses asynchronous connects to the MQTT brokers so that it
can handle situations in which a broker may temporarily be
unavailable.

Extensible command-line interface for Netbox using the pynetbox module.

Notable Features:
* Search Netbox instance
* Filter Netbox objects
* Create and update Netbox objects with YAML file
* Shell with preloaded pynetbox endpoints
* Custom Views
* Custom Commands

A ping tool with real-time data and visualizations.

Features
* Supports concurrent Ping for multiple addresses..
* Supports visual latency display.
* Real-time display of maximum, minimum, average latency, packet
loss rate, and other metrics.
* Support IPv4 and IPv6.
* Supports concurrent pinging of n ip's under one address.
* Support output results to files.

NetPerfMeter is a network performance meter for the UDP, TCP, SCTP and DCCP transport protocols over IPv4 and IPv6. It simultaneously transmits bidirectional flows to an endpoint and measures the resulting flow bandwidths and QoS. The results are written as vector and scalar files. The vector files can e.g. be used to create plots of the results.

netsniff-ng is a high performance Linux network sniffer for packet inspection.
Basically, it is similar to tcpdump, but it doesn't need syscalls for fetching
packets. Instead, it uses an memory mapped area within kernel space for
accessing packets without the need of copying them to userspace ('zero-copy'
mechanism). It can be used for protocol analysis and reverse engineering,
network debugging, measurement of performance throughput, or network statistics
creation of incoming packets on central network nodes like routers or
firewalls.

The netsniff-ng toolkit consists of the following utilities:

* netsniff-ng, a fast zero-copy analyzer, pcap capturing and replaying tool
* trafgen, a multithreaded low-level zero-copy network packet generator
* mausezahn, high-level packet generator for HW/SW appliances with Cisco-CLI
* bpfc, a Berkeley Packet Filter compiler, Linux BPF JIT disassembler
* ifpps, a top-like kernel networking statistics tool
* flowtop, a top-like netfilter connection tracking tool
* curvetun, a lightweight curve25519-based IP tunnel
* astraceroute, an autonomous system (AS) trace route utility

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.

Converts/manipulates/extracts data from a Nmap scan output.

nuttcp is a network performance measurement tool intended for use by network
and system managers. Its most basic usage is to determine the raw TCP (or UDP)
network layer throughput by transferring memory buffers from a source system
across an interconnecting network to a destination system, either transferring
data for a specified time interval, or alternatively transferring a specified
number of bytes.

This is the OwnTracks command line interface publisher, a.k.a.
ocli, a small utility which connects to gpsd and publishes position
information in OwnTracks JSON to an MQTT broker in order for
compatible software to process location data.

Omphalos is a tool for visualizing and controlling a local network (though it
will also process pcap savefiles). Captured packets are analyzed to build a
database of hosts and services. Various scans can be performed to elicit
informative packets. Spoofing and redirection at several layers allows flows
to be redirected through the host machine, or silenced. Omphalos is fully IPv6
aware, and makes use of numerous service discovery protocols.

P0f is a tool that utilizes an array of sophisticated, purely passive traffic
fingerprinting mechanisms to identify the players behind any incidental TCP/IP
communications (often as little as a single normal SYN) without interfering in
any way.

A command line tool to run SQL queries directly on PCAP files, the results
can be outputted as JSON (default), formatted/compact CSV and XML.#
It also contain a very simplistic web-server in order to inspect PCAP files
remotely.
PacketQ was previously known as DNS2db but was renamed in 2011 when it was
rebuilt and could handle protocols other than DNS among other things.