UNIX Serial Port Redirector

Hi ,
I need to have an application where in I am able to create a virtual Serial port on a UNIX machine for a remote device which is accessible by a IP address and a port number (by terminal server). Both the machine and the remote device are on the same network. So after this application is started , it will seem like that the remote device is connected to the UNIX's local serial port and I should be able to do the normal operation on that device for example if it is a modem I should be able to use all the 'at' command sets.

If any one knows about a freeware/download or can give any pointers it will be really helpful.

Thanks,
-Naveen.

I found two sites, hope these help you:

http://www.dcbnet.com/notes/termnet-3.1.tar
http://www.anzio.com/products/virtporttd.htm