Aircrack-ng suite contains all that tools that required for bigginier to highly intense wireless penetration testing. Aircrack-ng tools are used to test 802.11 WEP/ WPA/ WPA2 PSK passwords strenght. Interesting fact of Aircrack-ng is that the tool is so famous that it was seen in some movies like Reboot and The Courier. You can use Aircrack-ng tools by downloading it from their website, You can also use their live cd andVMWare images to run Aircrack-ng tools.
Wireshark is raw network packet capturing tools used by most network engineers and penetration testers to see what flows through the network. It captures all network data while in promiscuous mode and display the data, packet wise in very enhanced and user friendly graphical interface. Wireshark is totally free to use you can download it and give a try know from here.
Nessus is mostly used Vulnerability Scanner that supports PC vulnerability scanning to Enterprise level vulnerability scanning, it is also available for mobile device vulnerability scanning. As Nessus provide a free Nessus Home version for students, testers, beginners and more enhanced and advanced version for Enterprises named Nessus Proffesional, Nessus Manager, Nessus Cloud. Check their official site for more info here.
Metasploit is a exploit framework written in Rubby. You can use Metasploit for multiple purposes like scanning, exploiting, coding, creating payload and evading them from Antivirus. You can do all of that in a single package, that is the real power of Metasploit. Check their official site for more info here.
Network Mapper (Nmap)
Nmap or Network Mapper is a Penetration tester tool of choice. You can scan all open ports, detect Operating system, grab banner, detect firewall, bypass firewall for port scanning, IDS detection, and the coolest thing is its own scrip engine. You can test various open vulnerabilities using Nmap’s script engine. More over it provide different types of scanning techniques like NULL scan, SYN scan, XMAS scan, SYN stealth scan, and Ideal scan. Check their official site for more info here.
Burp Suite is an platform for performing security testing and audits of web applications. Its various tools work together to support the entire testing process, from initial mapping and analysis of an application's attack surface, through to finding and exploiting security vulnerabilities. Burp Suite mainly act as proxy server through which tester see what request and responses made between server and client sides. Burp gives you full control, letting you combine advanced manual techniques with state-of-the-art automation, to make your work faster, more effective, and more fun. Check their official site for more info here.
Number one of the biggest security holes are passwords, as every password security study shows. This tool is a proof of concept code, to give researchers and security consultants the possibility to show how easy it would be to gain unauthorized access from remote to a system. THC Hydra is used to test the password strength, that it might being cracked or not. And to recover passwords if you lost one by brute forcing and other password breaking techniques using THC Hydra tool. Check their official site for more info here.
Netcat or nc is used to read or write over network connections using tcp or udp. It is is mostly used in network debugging or to investigate the network. Netcat is also used to remotely access the command line of others pc, weather it is Linux or Windows machine. Check their official site for more info here.
Snort is an open source Intrusion Detection and Prevention system works on rules. Snort is used for real time network traffic logging and filtering. Snort is created by Martin Roesch in 1998. Check their official site for more info here.
Tor was originally designed, implemented, and deployed as a third-generation onion routing project of the U.S. Naval Research Laboratory. It was originally developed with the U.S. Navy in mind, for the primary purpose of protecting government communications. Today, it is used every day for a wide variety of purposes by normal people, the military, journalists, law enforcement officers, activists, and many others. Using Tor protects you against a common form of Internet surveillance known as "traffic analysis. Check their official site for more info here.