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GNS3 is a graphical network simulator that allows you to design complex network topologies and to launch simulations on them. To allow complete simulations, GNS3 is strongly linked with [Dynamips](/armory/dynamips/), an IOS emulator which allows users to run IOS binary images from Cisco Systems, and [Dynagen](/armory/dynagen/), a text-based front-end for ...



arping maps MAC addresses to IP addresses (or vice versa) by broadcasting ARP queries.

Enumeration Network Utilities


SING stands for 'Send ICMP Nasty Garbage'. It is a tool that sends ICMP packets fully customized from command line. Its main purpose is to replace the ping command but adding certain enhancements (Fragmentation, spoofing,...)

Network Utilities Spoofing


ethtool is used to query and modify low-level NIC settings, like speed, duplex, and autonegotiation.

Network Utilities


Tcpreplay is a suite of BSD licensed tools written by Aaron Turner for UNIX (and Win32 under Cygwin) operating systems which gives you the ability to use previously captured traffic in libpcap format to test a variety of network devices. It allows you to classify traffic as client or server, ...

Packet Analysis Packet Crafting


tcpflow is a program that captures data transmitted as part of TCP connections (flows), and stores the data in a way that is convenient for protocol analysis or debugging. A program like 'tcpdump' shows a summary of packets seen on the wire, but usually doesn't store the data that's actually ...

Packet Analysis


The ipsumdump program 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 ...

Packet Analysis


The Network Dump data Displayer and Editor is a framework for inspection, analysis and manipulation of tcpdump trace files. It addresses the need for a toolset that allows easy inspection, modification, and creation of pcap/tcpdump trace files.

Packet Analysis


Nmap ("Network Mapper") is a free and open source utility for network exploration or security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime. Nmap uses raw IP packets in novel ways to ...

Enumeration Network Utilities


sipsak is a small command line tool for developers and administrators of Session Initiation Protocol (SIP) applications. It can be used for some simple tests on SIP applications and devices.

Packet Crafting Voice Over IP


mtr combines the functionality of the traceroute and ping programs in a single network diagnostic tool. As mtr starts, it investigates the network connection between the host mtr runs on and HOSTNAME by sending packets with purposefully low TTLs. It continues to send packets with low TTL, noting the response ...

Network Monitoring Network Utilities


LFT, short for Layer Four Traceroute, is a sort of 'traceroute' that often works much faster (than the commonly-used Van Jacobson method) and goes through many configurations of packet-filters (firewalls). More importantly, LFT implements numerous other features including AS number lookups through several reliable sources, loose source routing, netblock name ...

Enumeration Network Utilities


WhoB is a likable whois client designed to provide everything a network engineer needs to know about a routed IP address by typing one line and reading one line. But even so, it's worth typing a few more lines because WhoB can do lots of other cool things for you! ...

Enumeration Network Utilities


RANCID monitors a router's (or more generally a device's) configuration, including software and hardware (cards, serial numbers, etc) and uses CVS or Subversion to maintain history of changes. Rancid currently supports Cisco routers, Juniper routers, Catalyst switches, Foundry switches, Redback NASs, ADC EZT3 muxes, MRTd (and thus likely IRRd), Alteon ...

Network Monitoring

Web Developer

Web Developer is a nifty Firefox extension which provides some very handy tools for web developers, including CSS manipulation, object highlighting, code validation, browser resizing, and lots more.

Browser Plugins

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