All software and hardware systems are prone to vulnerabilities. Your system can be affected by an OS bug or through an ambiguity in a commercial product. Unscrupulous hackers can penetrate systems through these vulnerabilities for gaining personal or commercial profits.
In order to prevent your system from unethical hacking, you need to incorporate open source tools for performing the security audits from time to time. Here are five open source security audit tools, which you can find reliable based on their simplicity, impeccable features and authenticity.
While auditing the vulnerabilities of the network, you should clearly know what is happening on the network. Previously known as Ethereal, Wireshark performs efficiently in capturing all types of packets. Owing to its great GUI, any user with basic computer knowledge can operate it with great ease.
Being a free and open-source packet analyzer, Wireshark is extensively used for network troubleshooting and analysis. It also finds application in software and communications protocol development, and education.
Wireshark enables the user to see all traffic visible on that interface. One can capture data from a live network connection or read from a file of already-captured packets. Besides, one can read live data from different network, which include IEEE 802.11, Ethernet, PPP and loopback. You can browse the captured network data via a GUI and can be edited or converted via command-line switches to the editcap program.
Nmap is considered as one of the most sought-after security assessment tools since a decade. This scanner can craft packets and perform scan to a granular TCP level such as SYN scan and ACK scan, to name a few.
It is capable of detecting remote devices as well as in identifying routers, firewalls and their model. Nmap is quite effective for network administrators for checking the ports that are open, and knowing whether one can further exploit those ports in simulated attacks.
Nmap comes with lot of pristine features for probing computer networks. These include OS detection, host discovery and service as well. Due to its plain text and verbose output, this tool can be scribbled for automating regular tasks as well as for obtaining evidence for an audit report.
Security professionals believe that OpenVAS is a very stable and trustworthy tool for detecting security issues. It also provides reports and inputs to fix them. With a built-in Greenbone security assistant, one can have a GUI dashboard for finding out all vulnerabilities and the affected machines on the network.
It is to be noted that OpenVas is not an easy and quick scanner for installation and usage. However, it is integrated with excellent features and braod IT security scanners, which you can avail for free. It is efficient in scanning huge number of vulnerabilities. OpenVas is compatible with concurrent scan tasks and scheduled scans. OpenVas needs Linux at least for the main component.
Metasploit is another potential open source framework, which is instrumental in performing thorough scan against a set of IP addresses. This tool is also applicable in anti-forensics. Adept programmers can create a code for exploiting a particular vulnerability, and try-out it with Metasploit to know if it gets detected.
Although it is a commercial tool, it has found a special mention because it is embedded with excellent features even with its free community edition. This tool was first developed by HD Moore in the year 2003. At first, it was used as a portable network tool with the aid of Perl. However, it has been again recreated in Ruby in 2007. On On October 21, 2009, it was declared that the Metasploit project had been acquired by Rapid7. Rapid7 is a security company, which is engaged in providing unified vulnerability management solutions.
Aircrack tool comes with a set of software utilities that serves as a packet crafter, sniffer and as a packet decoder too. Even though Aircrack is highly effective on Linux distros, but users mostly prefer the one that is on BackTrack Linux.
The aforesaid five tools can play a significant role in preventing and protecting your system from malicious and unethical hacking. Besides, you can also go for other security assessment tools such as SecureCheq, Qualys FreeScan or Microsoft Baseline Security Analyzer (MBSA).
Aircrack is a network software suite, which consists of a detector, packet sniffer, WEP and WPA/WPA2-PSK cracker. It also comes with analysis tool for 802.11 wireless LANs. It can also perform with any wireless network interface controller having driver compatibility with raw monitoring mode and can identify 802.11a, 802.11b and 802.11g traffic.