When the black Command Prompt window opens type
ipconfig (and press Enter)
Notice in the above example the IP address is
192.168.0.10. You will want to remember the 192.168.0 part (the
first 3 sets of numbers).
Next open Norton Internet Security by right
clicking on the icon in the system tray (down at the bottom right by
the clock) and selecting Norton Internet Security
Next Double Left Mouse Click on
Personal Firewall
Click the Networking Tab.
Click Add
Then add a Range
In the Start type in the 1st three sets of
numbers from step3 (above) followed by 0 (zero). So, 192.168.0.0
In the End type in the 1st three sets of numbers
from step3 (above) followed by 255. So, 192.168.0.255