tcp port listener

SRedirect is a command line utility that allows a remote TCP/IP connection to a serial port. SRedirect redirects all RS-232 data from a TCP/IP port to and from the local serial port. SRedirect creates a server for ONE local serial communications (COM) port. SRedirect allows connection of a client application. SRedirect transfers data in both directions between the connected client and the local COM port.

Legion Development's LucidScan is a portable multithreaded control based network probing utility. Powerful enough to accurately scan tens of thousands of TCP and UDP ports in minutes while efficient enough on resources to run silently.

Serial Port Control is an inexpensive royalty-free component. You can use it with any development environment, such as VB, VB .Net, VC++, C#, Delphi, etc. Just put it on a form and vou've got all the functionality you need to access an RS232 port. The event driven architecture makes it a snap to use. Just define a function in your program and it will be triggered automatically when new data is available through the port.

PacketTrap (http://www.PacketTrap.com) Port Scan is a utility that looks for open TCP ports on one or more network nodes. Port Scan may be configured to scan commonly used ports or a custom set of ports as needed. The fast, accurate results are available for export.

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.

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.

SeriCon is a universal serial (COM) port control program, by which you can easily send, receive and monitor various kinds of data to and from your hardware connected to the port. With texts and graphics, it frees your hardware's MCU from number coversion codes for serial communication, and also can be used as a pulse counter, generator or a timer, using control bits.

Wandering IPs is geolocation software. Once launched it monitors TCP connections made to or from your PC, identifies remote IP adresses and then tries to determine their geographic locations. Results are displayed on textured. iluminated accordingly to time zone you're currently in, 3D globe. Apart from locating endpoinds, it can be used to determine the route taken by packets across an IP network.