Network Utilities

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Engage Packet Builder — 98/ME/NT/2000/XP
Engage Packet Builder is a powerfull and scriptable libnet-based packet builder for Windows. Features include packet injection starting from the link layer, custom payload in hex or ASCII format, scripting engine, and more.

Network Notepad — 98/ME/NT/2000/XP
Network Notepad is a program for creating interactive network diagrams with user-definable management features such as point-and-click telnet.

ItCan.Net Monitor — 98/ME/NT/2000/XP
ItCan.Net Monitor is a bandwidth analysis utility. Besides giving a graphical illustration of the bandwidth usage on your computer or the network it resides, you get a list of all incoming and outgoing connections. This way you know exactly how your bandwidth is used. You can also use it to monitor the connections, see how many people are downloading heavily from the Internet, see how many people are using those chat programs. ItCan.Net Monitor will tell you everything you need to know. Like a network sniffer it will analyse the packets and display them to you the way you want it to, textual, graphical or a combination of the two.

GFI LANguard Network Security Scanner — 98/ME/NT/2000/XP
GFI LANguard Network Security Scanner (N.S.S.) checks your network for all potential methods that a hacker might use to attack your network. By analyzing the operating system and the applications running on your network, GFI LANguard N.S.S. identifies possible security holes. In other words, it plays the devil’s advocate and alerts you to weaknesses before a hacker can find them, enabling you to deal with these issues before a hacker can exploit them. GFI LANguard N.S.S. scans your entire network, IP by IP, and provides information such as service pack level of the machine, missing security patches, open shares, open ports, services/applications active on the computer, key registry entries, weak passwords, users and groups, and more. Scan results are outputted to an HTML report, which can be customized/queried, enabling you to proactively secure your network – for example, by shutting down unnecessary ports, closing shares, installing service packs and hotfixes, etc.

Demarc PureSecure Personal Edition — 98/ME/NT/2000/XP
Demarc PureSecure is a one of a kind, Total Intrusion Detection System (TIDS), which provides an unsurpassed level of comprehensive security. For the first time you will be able to reliably prevent, detect, and deter internal and external threats to your organization’s valuable assets with complete confidence, 24 hours a day. Advanced cross platform compatible technology means PureSecure can be deployed and scale in a wide variety of network infrastructures.

Network MinerWindows/MAC/Linux
Network Minder is an excellent network forensic tool.

Active Ports — NT/2000/XP
Active Ports – easy to use tool that enables you to monitor all open TCP/IP and UDP ports on the local computer. Active Ports maps ports to the owning application so you can watch which process has opened which port. It also displays a local and remote IP address for each connection and allows you to close any port. Active Ports can help you to detect trojans and other malicious programs.

NetStat Live — 98/ME/NT/2000/XP
AnalogX NetStat Live is a small, easy to use TCP/IP protocol monitor which can be used to see your exact throughput on both incoming and outgoing data – whether you’re using a modem, cable modem, DSL, or local network. It lets you see how quickly your data goes from your computer to another computer on the Internet, it will tell you how many other computers your data must go through to get there. NSL also graphs your CPU usage of your system.

IP Subnet Calculator — 98/ME/NT/2000/XP
The IP Subnet Calculator is a utility for computing information about class A, B, or C IP addresses such as address info, subnet and host tables, and supernetting / CIDR.

UltraVNC — 98/ME/NT/2000/XP
Ultr@VNC is a client/server software that allows you to remotely control a computer over any TCP/IP connection as if you were in front of it. Features include toolbar and hotkeys, high speed, MS logon/NT security/Active Directory support, embedded file transfer and chat, and more.

eEye Digital Security Tools — 98/ME/NT/2000/XP
This is a collection of free network security tools, specifically programs that scan class C networks for specific vulnerabilities such as Nimda, CodeRed, SQL Worm, Apache Chunk, etc. and alert you of any machines that are vulnerable or infected.

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