Nessus
Nessus is a remote security scanner for Linux, Solaris, FreeBSD, and Mac OS X. It is plugin-based and performs over 10,000 remote security checks. It allows for reports to be generated in HTML, and suggests a solution for each finding.
Ethereal
Ethereal is used by network professionals around the world for troubleshooting, analysis, software and protocol development, and education. It has all of the standard features you would expect in a protocol analyzer, and several features not seen in any other product. Its open source license allows talented experts in the networking community to add enhancements. It runs on all popular computing platforms, including Unix, Linux, and Windows.
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. Other features include TCP SYN scanning, UDP scanning, HTML reports, built-in port description database, Windows host enumeration, banner grabbing and more.
The version 4 adds several new features:
Superior scanning speed Support for unlimited IP ranges Improved host detection using multiple ICMP methods TCP SYN scanning UDP scanning (two methods) IP address import supporting ranges and CIDR formats Simple HTML report generation Source port scanning Fast hostname resolving Extensive banner grabbing Massive built-in port list description database IP and port scan order randomization A selection of useful tools (ping, traceroute, Whois etc) Extensive Windows host enumeration capability
SuperScan 4 is intended for Windows 2000 and XP only. Administrator privileges are required to run the program. It will not run on Windows 95/98/ME.
Nmap
Nmap is a free security scanner written by Fyodor. It is used to evaluate the security of computers, and to discover services or servers on a computer network.
Nmap features include:
Host Discovery - Identifying computers on a network, for example listing the computers which respond to pings, or which have a particular port open Port Scanning - Enumerating the open ports on one or more target computers Version Detection - Interogating listening network services listening on remote computers to determine the application name and version number. OS Detection - Remotely determining the operating system and some hardware characteristics of network devices
DifileThief
DiFile Thief is a Windows application that sniffs the raw data and pulls out valuable information. It has one drop down box with which you select the network interface adapter to watch.
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