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OpenDarwin 7.2.1 - man page for portmap (opendarwin section 8)

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

NAME
     portmap -- RPC program,version to DARPA port mapper

SYNOPSIS
     portmap [-d] [-v] [-h bindip]

DESCRIPTION
     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.

     Portmap uses hosts_access(5) access control by default.  Access control patterns may only
     reference IP addresses.

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

     The following options are available:

     -d      Prevent portmap from running as a daemon, and causes errors and debugging informa-
	     tion to be printed to the standard error output.

     -v      Enable verbose logging of access control checks.

     -h      Specify specific ip addresses to bind to for UDP requests.  This option may be spec-
	     ified multiple times and is typically necessary when running portmap on a multi-
	     homed host.  If no -h option is specified, portmap will bind to INADDR_ANY, which
	     could lead to problems on a multi-homed host due to portmap returning a udp packet
	     from a different IP address then it was sent to.  Note that when specifying ip
	     addresses with -h, portmap will automatically add 127.0.0.1 to the list so you don't
	     have to.

SEE ALSO
     hosts_access(5), inetd.conf(5), inetd(8), rpcinfo(8)

BUGS
     If portmap crashes, all servers must be restarted.

HISTORY
     The portmap command appeared in 4.3BSD

4.3 Berkeley Distribution		   June 6, 1993 		4.3 Berkeley Distribution
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