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+.\" @(#)portmap.8c	2.2 88/08/03 4.0 RPCSRC; from 1.10 88/03/14 SMI
+.TH PORTMAP 8C "9 September 1987"
+.SH NAME
+portmap \- DARPA port to RPC program number mapper
+.SH SYNOPSIS
+.B /usr/etc/rpc.portmap
+.SH DESCRIPTION
+.IX  "portmap command"  ""  "\fLportmap\fP \(em DARPA to RPC mapper"
+.IX  DARPA "to RPC mapper \(em \fLportmap\fP"
+.B portmap
+is a server that converts
+.SM RPC
+program numbers into
+.SM DARPA
+protocol port numbers.
+It must be running in order to make
+.SM RPC
+calls.
+.LP
+When an
+.SM RPC
+server is started, it will tell
+.B portmap
+what port number it is listening to, and what
+.SM RPC
+program numbers it is prepared to serve.
+When a client wishes to make an
+.SM RPC
+call to a given program number,
+it will first contact
+.B portmap
+on the server machine to determine
+the port number where
+.SM RPC
+packets should be sent.
+.LP
+Normally, standard
+.SM RPC
+servers are started by
+.BR inetd (8C),
+so
+.B portmap
+must be started before
+.B inetd
+is invoked.
+.SH "SEE ALSO"
+.BR inetd.conf (5),
+.BR rpcinfo (8),
+.BR inetd (8)
+.SH BUGS
+If
+.B portmap
+crashes, all servers must be restarted.