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port to program number mapper
is a server that converts program numbers
into protocol port numbers. It must be running in order to make calls.
When an server is started, it will tell what port number it is listening
to, and what program numbers it is prepared to serve. When a client wishes
to make an call to a given program number, it will first contact on the
server machine to determine the port number where packets should be sent.
must be started before any servers are invoked. Normally forks and
dissociates itself from the terminal like any other daemon. then logs errors
using records all current mapping in the file so that if it gets killed
and restarted, it can reload the mapping for currently active services.
Options available: Display version number and exit. (debug) prevents
from running as a daemon, and causes errors and debugging information
to be printed to the standard error output. (foreground) prevents from
running as a daemon, and causes log messages to be printed to the standard
error output. (chroot) tell to into should be empty, not writable by
the daemon user, and preferably on a filesystem mounted read-only, noexec,
nodev, and nosuid. Set the user-id and group-id of the running process to
those given, rather than the compiled-in defaults of 1/1. (verbose) run
in verbose mode. bind to address. If you specify 127.0.0.1 it will bind to
the loopback interface only. bind to the loop-back address 127.0.0.1. This
is a shorthand for specifying 127.0.0.1 with -i. This version is protected
by the library. You have to give the clients access to if they should
be allowed to use it. To allow connects from clients of the network 192.168.
you could use the following line in /etc/hosts.allow: portmap: 192.168.
In order to avoid deadlocks, the program does not attempt to look up the
remote host name or user name, nor will it try to match NIS netgroups. As
a consequence only network number patterns (or IP addresses) will work
for portmap access control, do not use hostnames. Notice that localhost
will always be allowed access to the portmapper. You have to use the daemon
name for the daemon name (even if the binary has a different name). For
the client names you can only use the keyword ALL or IP addresses (NOT
host or domain names).
For further information please have a look at
the and manual pages.
The command appeared in
4.3
This manual page was changed by for the Debian Project.
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