Construct a Basic ARP Packet Using Colasoft Packet Builder for Windows 7

1. Go to the command prompt for both computers. You can get to the command prompt by searching cmd from the Windows start menu search bar or Start->All Programs->Accessories.
2. Enter the command ipconfig. This will display the IP addresses for the ethernet adapters installed in the computers. You should see a list of addresses appear on the screen.
3. Enter the command getmac (using the command prompt) on the computer that will be sending out the packet. This command will provide you with the MAC address for a host computer.
4. Click Add In Colasoft Packet Builder.
5. Select the ARP template for the packet.
6. Under the Ethernet Type II header enter the Destination Address "FF:FF:FF:FF:FF:FF". This ensures that the packet will go out as a broadcast on the network.
7. Enter the Source Address as the MAC address you obtained from the source computer using the command getmac.
8. Under the ARP - Address Resolution Protocol header enter the MAC address you obtained in the Source Physics field.
9. Under the same header, enter the source IP address in the Source IP field using quad dotted format(ex 0.0.0.0).
10. Enter the destination IP address obtained in Step 2 from the destination computer in the Destination IP field using quad dotted format.
11. Right click on the packet in the packet list pane on the right hand side of the program and click "Send Selected Packets...".