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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(2) ★★★★ sslstrip (#61, new!)

sslstrip is an SSL stripping proxy, designed to make unencrypted HTTP sessions look as much as possible like HTTPS sessions. It converts https links to http or to https with a known private key. It even provides a padlock favicon for the illusion of a secure channel. Many HTTPS sites are normally accessed from a redirect on an HTTP page, and many users don't notice when their connection isn't upgraded. Read 2 reviews.

Latest release: version 0.7 on Dec. 18, 2009 (14 years, 4 months ago).

no rating Ngrep (#63, 25)

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 TCP, UDP and ICMP 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. Review this tool.

Latest release: version 1.45 on Nov. 28, 2006 (17 years, 5 months ago).

no rating EtherApe (#64, 21)

Featuring link layer, IP, and TCP modes, EtherApe displays network activity graphically with a color coded protocols display. Hosts and links change in size with traffic. It supports Ethernet, WLAN, FDDI, Token Ring, ISDN, PPP and SLIP devices. It can filter traffic to be shown, and can read traffic from a file as well as live from the network. Review this tool.

Latest release: version 0.9.13 on May 5, 2013 (10 years, 12 months ago).

(3) ★★½ Angry IP Scanner (#66, 15)

Angry IP Scanner is a small open source Java application which performs host discovery ("ping scan") and port scans. The old 2.x release was Windows-only, but the new 3.X series runs on Linux, Mac, or Windows as long as Java is installed. Version 3.X omits the vampire zebra logo. As with all connect()-based scanners, performance on Windows XP SP2 and newer be poor due to limitations added to tcpip.sys. The FAQ provides details and workarounds. A short review was posted to nmap-dev in 2008. Read 4 reviews.

Latest release: version 3.0-beta4 on March 23, 2009 (15 years, 1 month ago).

(6) ★★★★★ Nagios (#69, 2)

Nagios is a system and network monitoring application. It watches hosts and services that you specify, alerting you when things go bad and when they get better. Some of its many features include monitoring of network services (SMTP, POP3, HTTP, NNTP, ICMP, etc.), monitoring of host resources (processor load, disk usage, etc.), and contact notifications when service or host problems occur and get resolved (via email, pager, or user-defined method). Read 8 reviews.

Latest release: version 4.0.8 on Aug. 12, 2014 (9 years, 8 months ago).

no rating sqlninja (#72, new!)

sqlininja exploits web applications that use Microsoft SQL Server as a database backend. Its focus is on getting a running shell on the remote host. sqlninja doesn't find an SQL injection in the first place, but automates the exploitation process once one has been discovered. Review this tool.

Latest release: version 0.2.6-r1 on April 29, 2012 (12 years ago).

no rating Helix (#73, 21)

Helix is a Ubuntu live CD customized for computer forensics. Helix has been designed very carefully to not touch the host computer in any way and it is forensically sound. Helix will not auto mount swap space, or auto mount any attached devices. Helix also has a special Windows autorun side for Incident Response and Forensics. Downloading of the live CD is only provided as a complement to membership in the e-fense members-only forum. An unsupported, older, no-cost version is available as well. Read 1 review.

Latest release: version 2009R3 on Dec. 23, 2009 (14 years, 4 months ago).

(1) ★★★★★ BeEF (#77, new!)

BeEF is a browser exploitation framework. This tool will demonstrate the collecting of zombie browsers and browser vulnerabilities in real-time. It provides a command and control interface which facilitates the targeting of individual or groups of zombie browsers. It is designed to make the creation of new exploit modules easy. Read 4 reviews.

Latest release: version 0.4.5.0 on April 25, 2014 (10 years ago).

(2) ★★★★★ Argus (#78, 5)

Argus is a fixed-model Real Time Flow Monitor designed to track and report on the status and performance of all network transactions seen in a data network traffic stream. Argus provides a common data format for reporting flow metrics such as connectivity, capacity, demand, loss, delay, and jitter on a per transaction basis. The record format that Argus uses is flexible and extensible, supporting generic flow identifiers and metrics, as well as application/protocol specific information. There is also another open source network monitoring program named Argus. Read 3 reviews.

Latest release: version 3.7 on Feb. 1, 2013 (11 years, 3 months ago).

(3) ★★★★★ OpenBSD PF (#79, 22)

Like Netfilter and ipfilter on other platforms, OpenBSD users love PF, their firewall tool. It handles network address translation, normalizing TCP/IP traffic, providing bandwidth control, and packet prioritization. It also offers some eccentric features, such as passive OS detection. Coming from the same guys who created OpenBSD, you can trust that it has been well audited and coded to avoid the sort of security holes we have seen in other  packet  filters. Read 4 reviews.

Latest release: version 5.3 on May 1, 2012 (12 years ago).

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