Computer network - key words

1234567
Across
  1. 2. small network in one geographical location
  2. 3. Wireless network technology
  3. 5. set of rules about exchanging data
  4. 7. Unique identifier for devices
Down
  1. 1. Common wired network technology
  2. 3. extensive network covering large areas
  3. 4. security barrier on a network
  4. 6. device directing data between networks