user-1: I have arduino UNO r3 ATMEGA 328P board and this kind of a cable. But I want to make and test a program that need to get the data through ethernet port. Can I do only with them. I want to know whether they are enough to that (there are any converter or virtual devices) or should I buy anything. 

user614: You can do the programming of the Arduino through the USB cable, but in order to test and operate the program, you'll need an Ethernet shield and a cable to connect that to the LAN.

-1: <p>I have arduino UNO r3 ATMEGA 328P board and <a href="http://www.seeedstudio.com/depot/TypeB-USB-cable-for-Arduino-Diecimila-and-Freeduino-p-130.html" rel="nofollow">this</a> kind of a cable. But I want to make and test a program that need to get the data through ethernet port. Can I do only with them. I want to know whether they are enough to that (there are any converter or virtual devices) or should I buy anything. </p>
 614: <p>You can do the programming of the Arduino through the USB cable, but in order to test and operate the program, you'll need an Ethernet shield and a cable to connect that to the LAN.</p>
