Librecast is a C library which supports IPv6 multicast networking.

Wireshark is a network protocol analyzer, or packet sniffer, that lets you capture and interactively browse the contents of network frames.

This package provides the NBD (Network Block Devices) client and server. It allows you to use remote block devices over a TCP/IP network.

Phantomsocks is an Internet censorship circumvention tool based on the desync technique, which was introduced in the 2017 paper Your State is Not Mine: A Closer Look at Evading Stateful Internet Censorship.

Further information on the usage could be found on the Wikibooks page Phantomsocks.

The ngtcp2 project is an effort to implement the RFC9000 (IETF) QUIC protocol.

Nload is a console application which monitors network traffic and bandwidth usage in real time. It visualizes the in- and outgoing traffic using two graphs, and provides additional info like total amount of transferred data and min/max network usage.

This package provides a daemon that snitches on programs making outbound connections. OpenSnitch is an application-level firewall that gives you granular control over outbound network connections on your system. It monitors application activity and prompts you to allow or deny connections on a per-application basis whenever a new outbound connection is attempted.

libyang is a YANG data modelling language parser and toolkit written (and providing API) in C. Current implementation covers YANG 1.0 (RFC 6020) as well as YANG 1.1 (RFC 7950).

OpenRDAP is a command line client for the Registration Data Access Protocol. RDAP is modern a replacement for WHOIS, which provides domain name and IP address registration information in JSON format over HTTP.

Proxychains-ng is a preloader which hooks calls to sockets in dynamically linked programs and redirects them through one or more SOCKS or HTTP proxies.

Aircrack-ng is a complete suite of tools to assess WiFi network security. It focuses on different areas of WiFi security: monitoring, attacking, testing, and cracking. All tools are command-line driven, which allows for heavy scripting.

The lksctp-tools project provides a user-space library for SCTP (libsctp) and C language header files (netinet/sctp.h) for accessing SCTP-specific APIs not provided by the standard sockets. It also includes some SCTP-related helper utilities.

This package provides a tiny HTTP client library in C.

Dropwatch is an interactive utility for monitoring and recording packets that are dropped by the kernel. It provides the commands dropwatch and dwdump.

httpstat is a tool to visualize statistics from the curl HTTP client. It acts as a wrapper for curl and prints timing information for each step of the HTTP request (DNS lookup, TCP connection, TLS handshake and so on) in the terminal.

Bandwidth Monitor NG is a small and simple console based live network and disk I/O bandwidth monitor.

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages.

LibNice is a library that implements the Interactive Connectivity Establishment (ICE) standard (RFC 5245 & RFC 8445). It provides a GLib-based library, libnice, as well as GStreamer elements to use it.

uBridge is a simple program to create user-land bridges between various technologies. Currently, bridging between UDP tunnels, Ethernet and TAP interfaces is supported. Packet capture is also supported.

This package contains a small set of tools to capture and convert packets from wireless devices for use with hashcat or John the Ripper.

Tunctl is used to set up and maintain persistent TUN/TAP network interfaces, enabling user applications to simulate network traffic. Such interfaces are useful for VPN software, virtualization, emulation, simulation, and a number of other applications.

Net::DNS::Resolver::Programmable is a programmable DNS resolver for offline emulation of DNS.

YAZ is a C/C++ library for information retrieval applications using Z39.50, SRU or Solr Web Service protocols for information retrieval. It also offers ZOOM API implementing them.

Netperf is a benchmark that can be used to measure the performance of many different types of networking. It provides tests for both unidirectional throughput, and end-to-end latency. The environments currently measurable by netperf include: TCP and UDP via BSD Sockets for both IPv4 and IPv6, DLPI, Unix Domain Sockets, SCTP for both IPv4 and IPv6.