XP Firewall Commander is an easy to use control interface for your Windows XP built-in firewall which lets you add and remove exceptions for programs and services so that they can receive inbound traffic.
If you use no exceptions, you can still view Web pages, send and receive e-mail messages, or use an instant messaging program.
XP Firewall Commander permits you to add a specific port and protocol (UDP or TCP) and a suitable port name.

X-NetStat Professional manages your current Internet and network connections. Information shown includes local and remote addresses, local and remote ports, connection status, connection age, bandwidth used, and the program/process behind it. Includes Auto-WHOIS lookup tools, Network Statistics (Interface, TCP, IP, UDP, ICMP), a web server, and many more features. It's like Internet/network radar, and you can even block unwanted connections.

X-NetStat displays information on your Internet and / or network connections in realtime. Details of each connections are shown in a list called the connection table, including remote hostname and IP address, local and remote ports, connection status, age, and process. The program can forcefully kill connections, copy connection information to the clipboard, minimize the application to the system tray, show bytes in/out, and more.

Socket Workbench is the definitive tool for analysing socket communications that underlie the Internet and several types of inter-process communication. Configure Socket Workbench to be a socket client (like a web browser or e-mail client) or a socket server with ease. You can send data through a socket and analyse that data that has been received.

Serial Port Mapper allows you to map any serial ports to any other serial ports. For example you install additional serial port expansion card to computer as COM7 serial port but your favorite software can work with COM1...COM4 ports only. To resolve this problem you can use Serial Port Mapper to map new COM7 port either to COM1 or to COM2...COM4. Now your software can open COM1 port (or COM2...COM4) but actually work with new COM7 port.

Scanmetender Standard is a multifunctional TCP/UDP network scanner and security suite, which unites a perfect graphical user interface (GUI) with professional functions. Scanmetender Standard is not only able to scan ports, but also to close them! It is probably the best choice if you search a port scanner.

Proxy Workbench is a unique proxy server ideal for developers, trainers and security experts that displays its data in real-time. You can actually see the data flowing between your e-mail client and the e-mail server, web browser and web server or even analyse FTP in both Passive and Active modes. In addition, the 'pass through' protocol handler enables analysis of protocols where the server does not readily change.

NetworkActiv Port Scanner is a freeware, Fast, Easy to use, Advanced network scanner with many useful features. This is not just a network scanner, with this you can perform DNS-dig, whois, remote OS fingerprinting, trace-route, ping, and much more.

Configurable UDP and TCP port forwarding.
Define IP address ranges to allow or block for each port being forwarded.
Have program forward multiple ports simultaneously.
View the current data throughput speed of each port forwarding operation.
Have program log connection events to a text file.
Run program without installing (if desired).
Bounce connections back to connector (on same or different port).
100% freeware.

Movie Torrent is a P2P file-sharing application for music, mp3, movies, software, documents and games downloads. It is compatible with Bittorrent but allows you to add multi-tracker information to the torrent and bears simultaneous downloads, download queue, selected downloads in torrent package, fast-resume, disk cache, speed limits, port mapping, proxy, ip-filter, etc

- Want to know who is or owns an ip address or domain?
- Search for interesting domains in another country.
- Get acoustic signals when a line breaks down/is up.
- Figure out why you can not reach a specific domain.
- Solve internet problems without leaving your desk.
- New: Printing of reports
Iban supports and analyzes the internet protocols dns, http, icmp, ping, smtp, sntp,
tracert, whois. Ideal but not limited to for sys admins.

AWSPS features a very comprehensive set of tools, some of them unique, for in-depth assessment of Network Security, namely 2 TCP port scanners, 1 UDP port scanner, 1 NetBIOS scanner, comprehensive Local Host and LAN information, NSLookUp, Ping, Finger and much more.

Artemis is a P2P file-sharing application for music, mp3, movies, software, documents and games downloads. You may now take advantage of the BitTorrent Pro decentralized network to share, search for, and download about any file you want to. Artemis offers an intuitive user interface, fast-resume, disk caching, very low CPU usage, speed limits, chatting, auto port mapping, and the ability to preview files while downloading.

Did you ever wonder what program opened that strange port that suddenly appeard in netstat ? Then Advanced Netstat is what you need ! Many trojans,backdoors,viruses and worms open ports on your system to allow an attacker to access your system and remotely control it. Advanced Netstat helps you to spot such applications. It shows you exactly which applications listen on the network for connections. It is the perfect tool for Administrators but al

Acid Scanner is advanced monitoring tool that allow administrators or common users scan their networks for possible security risk and uncover unprotected ways to their computers. It offers many tcp/ip utilities in one program: shared resource scan, ping scan, port scan, traceroute, advanced terminal (tcp/udp session, traffic logging), netbios info, remote resource mounting, results exporting and much more...

Monitor open TCP and UDP ports on your PC. With the help of this utility you may view the list of open ports, process IDs that open these ports, local and remote IP addresses and connection state. This software maps open ports to the applications that own them, helping you easily detect trojans, spyware or malware. You may even instantly close an open unwanted connection or export the list of open ports into a text file for future research.

See which ports belong to which programs! Port Explorer shows all the open ports on your system and what programs own them. Along with this ability it also has many tools including a packet sniffer, bandwidth throttling and country detection to name just a few. Port Explorer has an intuitive GUI that allows you to quickly see all your network activity, and thanks to its ease of use is allowing people everywhere to do advanced network activities.