Network servers and databases
In the UNIX system, most server programs are started by a
super server, called the ``Internet daemon''. The Internet
daemon, /etc/inetd, acts as a master server for
programs specified in its configuration file, /etc/inetd.conf.
It listens for service requests for these servers, and starts
up the appropriate program whenever a request is received.
The configuration file includes information about:
daytime stream tcp nowait root internalConsult inetd.conf(SFF) for more details on the format of the configuration file and the operation of the Internet daemon. Several data files are used by the network library routines and server programs. Most of these files are host independent and are updated only rarely.
Table 1-3 Network database files
---------------------------------------------------------------------- File Manual reference Use ---------------------------------------------------------------------- /etc/hosts hosts(SFF) host names /etc/networks networks(SFF) network names /etc/services services(SFF) list of known services /etc/protocols protocols(SFF) protocol names /etc/hosts.equiv rshd(ADMN) list of ``trusted'' hosts /etc/ftpusers ftpd(ADMN) list of ``unwelcome'' ftp users /etc/inetd.conf inetd(ADMN) list of servers started by inetdThe files distributed are set up for Internet hosts. Local networks and hosts should be added to the databases to describe the local configuration.