Free ip port software for windows

IP Port Spy is a tool that will listen on a TCP or UDP port, and print the frames received in the main window.
No frames are sent back in response to the frames received, although TCP connects are sent when a connect request is sent on a TCP port.
This software was developed with the IP developer in mind, as a means to test and debug network applications, or just to provide information about particular frames. The frames shown below in the main window are SNMP frames, with IP Port Spy listening on UDP port 161.

IP Relay 1.0 offers you a small yet smart program that can be useful to relay/tunnel TCP and UDP connections received on a local IP port to a remote IP port. This gives the ability to tunnel TCP and UDP packets through an intermediate host. The program works both on Linux/Unix and Win32 platforms.

DC Port Scanner is, as its name says, a simple and easy-to-use port scanner. DC Port Scanner is, as its name says, a simple and easy-to-use port scanner.
Enter the first three bytes and the trailing dot of an IP address (e.g. "127.0.0."). Click go and a file containing all the open ports will be given.
Must not be used maliciously. Intended as network administrators security analysis tool.
DC Port Scanner is also a small program that does not require any installation.

HW VSP will add a virtual serial port (COM5) to the system and will redirect all
data through TCP/IP to a remote IP address.
HW VSP is free in unlimited version, it supports Windows 2000 and XP and works with any TCP/IP device, it can work as a TCP server as well as a TCP Client.
HW VSP supports remote RS232 port control (speed, parity, stop bits,
etc.) over the RFC2217 (NVT). More virtual COMs can be created
when launched with parameters.