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There is a crucial need for tools that accurately perform network scanning and vulnerably assessment. This article lists Top 10 Security/Hacking Tools & Utilities that address to keep the infrastructure safe.

1. Nmap

Nmap (“Network Mapper”) is a free open source utility for network exploration or security auditing. It was designed to rapidly scan large networks, although it works fine against single hosts. Nmap uses raw IP packets in novel ways to determine what hosts are available on the network, what services (application name and version) those hosts are offering, what operating systems (and OS versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics. Nmap runs on most types of computers and both console and graphical versions are available. Nmap is free and open source.

Can be used by beginners (-sT) or by pros alike (–packet_trace). A very versatile tool, once you fully understand the results.

You can download Nmap here

2 Nessus Remote Security Scanner

Nessus is the world’s most popular closed source vulnerably scanner which works with a client-server framework. Many of the world’s largest organizations are realizing significant cost savings by using Nessus to audit business-critical enterprise devices and applications. Nessus also makes no assumptions regarding what services are running on what ports and it actively attempts to exploit vulnerabilities rather than just comparing version numbers of the active services.

You can download Nessus here

3 John the Ripper

John the Ripper is a fast password cracker, It is one of the most popular password testing and breaking programs as it combines a number of password crackers into one package, autodetects password hash types, and includes a customizable cracker. JTP is currently available for many flavors of Unix (11 are officially supported, not counting different architectures), DOS, Win32, BeOS, and OpenVMS. Its primary purpose is to detect weak Unix passwords. Besides several crypt(3) password hash types most commonly found on various Unix flavors, supported out of the box are Kerberos AFS and Windows NT/2000/XP/2003 LM hashes, plus several more with contributed patches.

You can download John the Ripper here

4 Nikto

Nikto is an Open Source (GPL) web server scanner which performs comprehensive tests against web servers for multiple items, including over 6500 potentially dangerous files/CGIs, checks for outdated versions of over 1250 servers, and version specific problems on over 270 servers. It also checks for server configuration items such as the presence of multiple index files, HTTP server options, and will attempt to identify installed web servers and software. Scan items and plugins are frequently updated and can be automatically updated.

Nikto is a good CGI scanner, there are some other tools that go well with Nikto (focus on http fingerprinting or Google hacking/info gathering etc, another article for just those)

You can download Nikto here

5 SuperScan

SuperScan is a powerful TCP port scanner, that includes a variety of additional networking tools like ping, traceroute, HTTP HEAD, WHOIS and more. It uses multi-threaded and asynchronous techniques resulting in extremely fast and versatile scanning. You can perform ping scans and port scans using any IP range or specify a text file to extract addresses from. SuperScan 4 is an update of the highly popular Windows port scanning tool, SuperScan.

You can download SuperSan here 

6 P0f

P0f v3 is a versatile passive OS fingerprinting tool. P0f can identify the operating system on:

* Machines that connect to your box (SYN mode),
* Machines you connect to (SYN+ACK mode),
* Machine you cannot connect to (RST+ mode),
* Machines whose communications you can observe.

Basically it can fingerprint anything, just by listening, it doesn’t make ANY active connections to the target machine.

You can download P0f V3 here

7 Wireshark

Wireshark is a GTK+-based network protocol analyzer, or sniffer, that lets you capture and interactively browse the contents of network frames. The goal of the project is to create a commercial-quality analyzer for Unix and to give Wireshark features that are missing from closed-source sniffers.

Works great on both Linux and Windows (with a GUI), easy to use and can reconstruct TCP/IP Streams.

You can download Wireshark here

8 Yersinia

Yersinia is a network tool designed to take advantage of some weakeness in different Layer 2 protocols. It pretends to be a solid framework for analyzing and testing the deployed networks and systems.

Currently, the following network protocols are implemented:

* Spanning Tree Protocol (STP)
* Cisco Discovery Protocol (CDP)
* Dynamic Trunking Protocol (DTP)
* Dynamic Host Configuration Protocol (DHCP)
* Hot Standby Router Protocol (HSRP)
* IEEE 802.1Q
* IEEE 802.1X
* Inter-Switch Link Protocol (ISL),
* VLAN Trunking Protocol (VTP).

You can download Yersinia here

9 Cain and Abel

Cain & Abel is a password recovery tool for Windows Operating Systems. It allows easy recovery of various kind of passwords by sniffing the network, cracking encrypted passwords using Dictionary, Brute-Force and Cryptanalysis attacks, recording VoIP conversations, decoding scrambled passwords, revealing password boxes, uncovering cached passwords and analyzing routing protocols. The program does not exploit any software vulnerabilities or bugs that could not be fixed with little effort. It covers some security aspects/weakness present in protocol’s standards, authentication methods and caching mechanisms; its main purpose is the simplified recovery of passwords and credentials from various sources, however it also ships some “non standard” utilities for Microsoft Windows users.

 You can download Cain and Abel here

10 NetStumbler

NetStumbler is a decent wireless tool for Windows. Sadly not as powerful as it’s Linux counterparts, but it’s easy to use and has a nice interface, good for the basics of war-driving. It allows you to detect Wireless Local Area Networks (WLANs) using 802.11b, 802.11a and 802.11g. It has many uses:

Verify that your network is set up the way you intended.
Find locations with poor coverage in your WLAN.
Detect other networks that may be causing interference on your network.
Detect unauthorized “rogue” access points in your workplace.
Help aim directional antennas for long-haul WLAN links.
Use it recreationally for WarDriving.

You can download NetStumbler here

Network Administrators must know about the reputed scanners and use them in their daily tasks to make their infrastructure secure and stable.

Hope you enjoyed the article, feel free to leave your comments. :)

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