networks

The networks map is the the abbreviated name for the networks.byaddr map. The derived maps are networks.byname and networks.byaddr. In most cases, the networks map is created from the /etc/networks file. A typical line looks like this:

network_name network_address [alias1,...] # comment

For example:

arpa 10 arpanet
intra_1 123.45.67.89 intranet # headquarters
sf_site 171.22.0.0 sf1 # san francisco satellite

For the networks.byname map, entries are defined like this:

  • Key is the network name: intranet
  • Value is the network address and any aliases defined for the network: intranet 171.22.0.0 intra

For the networks.byaddr map, entries are defined like this:

  • Key is the network address: 171.22.0.0
  • Value is the network name and any aliases defined for the network: intranet 171.22.0.0 intra

If you create a networks map in Active Directory, you must include the key as part of the value. For example:

  • Key: intranet
  • Value: intranet 171.22.0.0 intra
  • Comment: The value includes the network name and address