Configuring Domain Name Files

Additional Domain Name Configuration Files

Additional Domain Name Configuration Files

In addition to the resolver file and the host name data base, three other files are available to allow you to configure additional information about your network. Each of these files is provided in sample format in the NET.SYS account. Each sample file contains an explanation of the format for the data and a sample entry. The available files and their functions are described as follows.

Network Name Database

The network name database, NETWORKS.NET.SYS, associates IP addresses with official network names and aliases. This allows the user to refer to a network by a symbolic name instead of an internet address. To configure the network name database, modify the sample file

NETSAMP.NET.SYS.

Protocol Name Database

The protocol name database PROTOCOL.NET.SYS, associates protocol numbers with official protocol names and aliases. This allows the user to refer to a protocol by a symbolic name instead of a number. The protocol number mappings are defined in RFC 1010 Assigned Numbers. To configure the protocol name database, modify the sample file PROTSAMP.NET.SYS (this is required for FTP use, starting in release 6.0).

Service Name Database

The service name database, SERVICES.NET.SYS, associates official service names and aliases with the port number and protocol the services use. Reserved port numbers 0 through 255 are assigned by RFC 1010. To configure the service name database, modify the sample file SERVSAMP.NET.SYS.

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Chapter 12