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
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 ter-
minal like any other daemon. Portmap then logs errors using
- Option available
- d (debug) prevents portmap from running as a daemon,and causes errors and debugging information to beprinted to the standard error output.
- v(verbose) run portmap in verbose mode.This portmap version is protected by the tcp_wrapperlibrary. You have to give the clients access to portmap ifthey should be allowed to use it. To allow connects fromclients of the .bar.com domain you could use the followingline in /etc/hosts.allow:portmap: .bar.comYou have to use the daemon name portmap for the daemon name(even if the binary has a different name). For the clientnames you can only use the keyword ALL or IP addresses (NOThost or domain names).For further information please have a look at the tcpd(8), hosts_allow(5)? and hosts_access(5) manual pages.
inetd(8) tcpd(8) hosts_access(5)
If portmap crashes, all servers must be
The portmap command appeared in 4.3
4.3 Berkeley Distribution March 16, 1991 1