SecTools.Org: Top 125 Network Security Tools

For more than a decade, the Nmap Project has been cataloguing the network security community's favorite tools. In 2011 this site became much more dynamic, offering ratings, reviews, searching, sorting, and a new tool suggestion form. This site allows open source and commercial tools on any platform, except those tools that we maintain (such as the Nmap Security Scanner, Ncat network connector, and Nping packet manipulator).

We're very impressed by the collective smarts of the security community and we highly recommend reading the whole list and investigating any tools you are unfamiliar with. Click any tool name for more details on that particular application, including the chance to read (and write) reviews. Many site elements are explained by tool tips if you hover your mouse over them. Enjoy!

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(1) ★★★★★ Nipper (#81, new!)

Nipper (short for Network Infrastructure Parser, previously known as CiscoParse) audits the security of network devices such as switches, routers, and firewalls. It works by parsing and analyzing device configuration file which the Nipper user must supply. This was an open source tool until its developer (Titania) released a commercial version and tried to hide their old GPL releases (including the GPLv2 version 0.10 source tarball). Read 1 review.

Latest release: version 1.3.

(1) ★★★ NetworkMiner (#82, new!)

NetworkMiner is a Network Forensic Analysis Tool for Windows. NetworkMiner can be used as a passive network sniffer/packet capturing tool in order to detect operating systems, sessions, hostnames, open ports etc. without putting any traffic on the network. NetworkMiner can also parse pcap files for off-line analysis and to regenerate/reassemble transmitted files and certificates from pcap files. In contrast to other sniffers like Wireshark, NetworkMiner's display focuses on hosts and their attributes rather than raw packets. Read 1 review.

Latest release: version 1.0 on Feb. 5, 2011 (13 years, 9 months ago).

(1) ★★★★★ Wikto (#83, 1)

Wikto is a tool that checks for flaws in webservers. It provides much the same functionality as Nikto but adds various interesting pieces of functionality, such as a Back-End miner and close Google integration. Wikto is written for the MS .NET environment and registration is required to download the binary and/or source code. Read 1 review.

Latest release: version 2.1.0.0 on Dec. 14, 2008 (15 years, 11 months ago).

no rating P0f (#84, 51)

P0f is able to identify the operating system of a target host simply by examining captured packets even when the device in question is behind an overzealous packet firewall. P0f does not generate ANY additional network traffic, direct or indirect. No name lookups, no mysterious probes, no ARIN queries, nothing. In the hands of advanced users, P0f can detect firewall presence, NAT use, existence of load balancers, and more! Review this tool.

Latest release: version 2.0.8 on Sept. 6, 2006 (18 years, 2 months ago).

(2) ★★★★★ NoScript (#85, new!)

NoScript is an add-on for Firefox that blocks JavaScript, Java, Flash, and other plugin content (allowing you to selectively re-enable them for certain sites). It also offers cross-site scripting protection. This is mainly designed to keep web users safe, but security testers can also use the add-on to see what scripts a site is using. One caution is that the NoScript author Giorgio Maone has been caught inserting hidden code into NoScript which disabled users' ad-blocking software so that ads would still show up on the NoScript web site. He did post a lengthy apology. Read 3 reviews.

Latest release: version 2.6.9.36 on Aug. 20, 2015 (9 years, 3 months ago).

(1) ★★★★ Sguil (#86, 1)

Sguil (pronounced sgweel) is built by network security analysts for network security analysts. Sguil's main component is an intuitive GUI that provides access to realtime events, session data, and raw packet captures. Sguil facilitates the practice of Network Security Monitoring and event driven analysis. Read 1 review.

Latest release: version 0.9.0 on March 28, 2014 (10 years, 8 months ago).

(1) ★★★★ Tamper Data (#88, new!)

Tamper Data is an add-on for Firefox that lets you view and modify HTTP requests before they are sent. It shows what information the web browser is sending on your behalf, such as cookies and hidden form fields. Use of this plugin can reveal web applications that trust the client not to misbehave. Read 1 review.

Latest release: version 10.1.1 on Feb. 11, 2010 (14 years, 9 months ago).

(4) ★★★★★ Firebug (#89, new!)

Firebug is an add-on for Firefox that provides access to browser internals. It features live editing of HTML and CSS, a DOM viewer, and a JavaScript debugger. Web application security testers appreciate the ability to see what's happening behind the scenes of the browser. Read 5 reviews.

Latest release: version 2.0.12 on Aug. 11, 2015 (9 years, 3 months ago).

(6) ★★★★½ inSSIDer (#90, new!)

inSSIDer is a wireless network scanner for Windows, OS X, and Android. It was designed to overcome limitations of NetStumbler, namely not working well on 64-bit Windows and Windows Vista. inSSIDer can find open wireless access points, track signal strength over time, and save logs with GPS records. Read 11 reviews.

Latest release: version 4.1.0 on Jan. 22, 2015 (9 years, 10 months ago).

no rating Nemesis (#91, 33)

The Nemesis Project is designed to be a commandline-based, portable human IP stack for UNIX/Linux (and now Windows!). The suite is broken down by protocol, and should allow for useful scripting of injected packet streams from simple shell scripts. If you enjoy Nemesis, you might also want to look at Hping as they complement each other well. Read 3 reviews.

Latest release: version 1.4beta3 on June 29, 2003 (21 years, 5 months ago).

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