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RedHat 9 (Linux i386) - man page for portmap (redhat section 8)

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PORTMAP(8)			   BSD System Manager's Manual			       PORTMAP(8)

     portmap -- DARPA port to RPC program number mapper

     portmap [-d] [-v]

     Portmap is a server that converts RPC program numbers into DARPA protocol port numbers.  It
     must be running in order to make RPC calls.

     When an RPC server is started, it will tell portmap what port number it is listening to, and
     what RPC program numbers it is prepared to serve.	When a client wishes to make an RPC call
     to a given program number, it will first contact portmap on the server machine to determine
     the port number where RPC packets should be sent.

     Portmap must be started before any RPC servers are invoked.

     Normally portmap forks and dissociates itself from the terminal like any other daemon.
     Portmap then logs errors using syslog(3).

     Option available:

     -d      (debug) prevents portmap from running as a daemon, and causes errors and debugging
	     information to be printed to the standard error output.

     -v      (verbose) run portmap in verbose mode.

     This portmap version is protected by the tcp_wrapper library. You have to give the clients
     access to portmap if they should be allowed to use it. To allow connects from clients of the
     .bar.com domain you could use the following line in /etc/hosts.allow:

     portmap: .bar.com

     You have to use the daemon name portmap for the daemon name (even if the binary has a dif-
     ferent name). For the client names you can use the keyword ALL, IP addresses, hostnames or
     domain names.

     For further information please have a look at the tcpd((8)), hosts_allow((5)) and
     hosts_access((5)) manual pages.

     xinetd.conf((5)), rpcinfo((8)), pmap_set((8)), pmap_dump((8)), xinetd((8)) tcpd((8))
     hosts_access((5)) hosts_options((5))

     If portmap crashes, all rpc servers must be restarted.

     The portmap command appeared in BSDBSD 4.3.

4.3 Berkeley Distribution		  March 16, 1991		4.3 Berkeley Distribution
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