Networking

• SendIP
  SendIP is a command-line tool to send arbitrary IP packets. It has a large number of options to specify the content of every header of a RIP, RIPng, BGP, TCP, UDP, ICMP, or raw IPv4/IPv6 packet. ...
  
• ax25-apps
  The ax25-apps package contains programs for the hamradio protocol AX.25 that would be used by normal users (as opposed to network daemons). ...
  
• NetChat
  NetChat is a network version of the "chat" utility that comes with PPP. It is a general purpose network "conversations" tool, designed for network testing. It can also be used for (very) quick setup ...
  
• Sipcalc
  Sipcalc is an advanced console-based IP subnet calculator. It can take multiple forms of input (IPv4/IPv6/interface/hostname) and output a multitude of information about a given subnet. ...
  
• Mint
  Mint is a small X toolbar that can switch network configurations in a few keystrokes. ...
  
• mdnsd
  mdnsd is a very lightweight, simple, portable, and easy to integrate open source implementation of Multicast DNS. ...
  
• dynacc
  Dynacc aims to be a package which gives you control over your Internet Connection. It runs a Linux router/host which provides MASQ services and HTTP proxying for a LAN and allows you to define users/...
  
• nttlscan
  Nttlscan is a quick network topology scanner, and it functions as a highly parallel traceroute. It randomly picks destination IP addresses and sends TCP or UDP probes. Returning ICMP messages are int...
  
• isdn2dbox
  isdn2dbox checks the Linux logfile for ISDN calls, and sends notification of these calls to dbox2. It features optional MySQL support, a debug mode, and a daemon mode. ...
  
• Los Alamos Message Passing Interface
  LA-MPI is an implementation of the Message Passing Interface (MPI) motivated by a growing need for fault tolerance at the software level in large high-performance computing (HPC) systems. ...
  
• Multithread Network Port Scanner
  The Multithread Network Port Scanner uses 50 POSIX threads to scan hosts. Up to 1000 ports can be scanned by it in 1 minute. ...
  
• PXE daemon
  The PXE daemon allows network managers to boot PXE-enabled machines over the network. It was implemented from the specification on Intel's WfM site. ...
  
• Packet Excalibur
  Packet Excalibur is a multi-platform graphical and scriptable network packet engine with extensible text-based protocol descriptions. It is a network tool designed to build and receive custom packets...
  
• AICMPSEND
  AICMPSEND is an ICMP sender with many features including ICMP flooding and spoofing. All ICMP flags and codes are implemented. ...
  
• flowd
  Flowd is a small, fast and secure NetFlow™ collector. ...
  
• LAN Information Server LISa
  LISa is a small daemon which provides something like the "network neighbourhood" under Windows, but more and only relying on the TCP/IP protocol stack. ...
  
• Ping Tunnel
  Ping Tunnel is a tool for reliably tunneling TCP connections over ICMP echo request and reply packets (commonly known as ping requests and replies). ...
  
• Posadis
  Posadis is a powerful Domain Name Server for various platforms. ...
  
• Packit
  Packit is a network auditing tool. Its value is derived from its ability to customize, inject, monitor, and manipulate IP traffic. ...
  
• onesixtyone SNMP scanner
  onesixtyone is an efficient SNMP scanner which utilizes a sweep technique to achieve extreme performance. It finds SNMP devices on your network and brute-forces the community strings using a dictiona...
  
• Ethernet TAP driver
  TAP provides packet reception and transmission for user-space programs. It can be viewed as a simple Ethernet device, which instead of receiving packets from a physical medium, receives them from a u...
  
• Firewalk
  Firewalking is a technique developed by MDS and DHG that employs traceroute-like techniques to analyze IP packet responses to determine gateway ACL filters and map networks. Firewalk is a tool implem...
  
• binkd
  Binkd is a TCP/IP daemon which transfers files between two Fidonet systems. It supports so-called "Binkley-Style outbound", also supported by most Fidonet software. ...
  
• Linux Ham Radio AX.25 patches and tools
  This patch adds better ham radio AX.25 protocol support to Linux, as well as new device drivers. ...
  
• Knetdump
  knetdump is a packet sniffer and analyzer for visualizing the basic protocols of the OSI layer 1-4. It can show the headers, connections on the net, and a tcp-connection between two hosts. ...