Investigation of violations and the sources of computer crime, has its own knowledge, this is called computer forensic field. However, the development of more advanced Internet technologies, has the effect that the existence of crimes and violations that occur world wide web is constantly increasing, one part of the computer forensic science is the Internet Forensic, which is a efforts about how to browse and to investigate the sources of crimes, violations (Exploitation of the service, fraud, phishing,scamming etc) on the Internet and ways of prevention.

Here, I will not explain details about the Internet Forensic and some violations, but here I will expose internet security tools are often used. Obviously, in addition to using the manual method, you should also require auxiliary tools that can perform search tasks in a fast and automatic, with the powerful features.

Let’s Get Started

In this article I will give Top 14 networks and internet security tools are very popular and widely used by network administrators or webmaster to monitor, control and supervise a network, server and a particular website.

1. Metasploit Framework

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Metasploit is an open-source security tools to build, test, and using exploit codes. Provides hundreds of exploitation techniques, you can view their amazing online demo.

Metasploit can help the system administrators and network within a network testing and overcome the exploitation of opportunities in their networks and systems.

2. Snort

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Snort is a security tool for detecting and recording logs, and including Instrusion Detection System (IDS). Snort has licensed Open-Source, very reliable and well-liked by many administrators. Snort can perform protocol analysis and detecting various types of attacks and probing attempts, buffer overflows, stealth port scans, CGI attacks, and more.

By using the Basic Analysis and Security Engine (BASE), Snort display and report violation efforts and variety malicious attacks in detail, noted in the Snort database accessible via a web browser so it is easy analysis.

3. Hping2

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Hping2 is a security tool for preparing and sending ICMP packets, UDP, or TCP and later, the reported results. HPing2 resemble Ping command, but also offers a far more complete control and supports IP fragmentation.

The main usefulness of Hping2 is doing traceroute, ping and probe on your host behind the firewall. Also useful in designing the protocol your firewall system.

4. Nessus

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In computer security, Nessus is one of tools for scan the weakness of the local network and servers. Nessus is free-tool for personal and Non-Commercial.

The main task of Nessus is to scan the weaknesses of the system default password, common password, the password blank and also scan the system, if a weakness can be exploited by a remote cracker.

5. Wireshark

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Wireshark is a software analyst protocol for local networks and the Internet. Wireshark licensed Open Source and available for Linux or Windows.

Wireshark has several superior features, among which is the language filter, and the ability to monitor the processes that formed in the TCP session. This software also supports hundreds of protocols and media types.

6. Netcat

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Netcat is a tool for debugging and network exploration work to read and write data across network connections. Netcat is designed as a tool of a reliable back-screen, which can be utilized directly or arranged by the program or other scripts.

7. Kismet

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Kismet is a tool for the detector, sniffer, and interference detection in wireless networks 802.11 layer2.

Kismet can identify tissue by passively sniffing (as opposed to active tools such as Netstumbler), and can even uncover hidden networks.

8. Cain & Abel

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Cain & Abel is a tool for recovery system password for windows systems. Working with doing sniffing on the network, breaking the encrypted passwords through dictionary-based attacks, brute-force, and criptanalysis, recording VoIP conversations, describing a random password.

9. John The Ripper

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John The Ripper is a tool that rapidly decomposing password. Available for UNIX platforms, DOS, Win32, BeOS, and OpenVMS.

John The Ripper is designed to detect weak passwords (easily guessed) and supports the combined password scrambler, such as the AFS and the combined LM Karberos on Windows NT/2000/XP.

10. Nikto

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Nikto is a web-server scanner tool and has licensed by Open Source license (GPL). Useful for testing web server as a whole, including a potentially dangerous file-file/CGI.

11. THC-Hydra

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THC-Hydra is a tool that can do the attacks in a barrage of more than 30 network protocols, including telnet, ftp, https, smb, software, database, and many others.

12. Open-SSH/PuTTY

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SSH tools provides encrypted communications between two hosts, so its secure. SSH tools is the replacement of old versions of some tools that were not secure.

There are many SSH-based applications. For UNIX platforms, can use the Open Source SSH for the Windows platform, can use PuTTY.

13. Ettercap

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Ettercap is a tool for the sniffer, interceptor and logger network. Ettercap supports the cuts on many types of protocol (even encrypted ones, like ssh and https). Insertion of data into a connection that can be done by  Ettercap.

14. TCP Dump

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Tcpdump is a classic sniffer tool for monitoring network and data. Tcpdump is very reliable and a lot of use before Ethereal (Wireshark) came, but now also still used.