to support Ethernet in FPGA you have to find MAC layer component and also if you will use only FPGA then you should find TCP-IP stack layer for FPGA too + simple microcontroller core (8051 for example) to control stack and make external interface for input data.
Usualy it's for money for example at Xilinx or Altera. You can try to find free sources in Internet. It's possible!
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Technical director Computer Vision System, Russia, www.cv.tom.ru
hi i'm a end user in FPGA forgive me if i were wrong
What u could do is bring in all the components of the LAN card or NETWork card and then take packets of data and intepret them as the machine does it...
I've learnt about the TCP/IP in college but i think u can bring this desing in ur FPGA itself...
Things may sound simple to say but to put them to work is difficult....I know