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Map RPC program numbers into universal addresses
rpcbind [-dilLs]
Neutrino
- -d
- Run in debug mode. In this mode, it doesn't fork when it starts.
Also, it prints additional information during operation, or
aborts on certain errors. Name-to-address
translation consistency checks are also shown in detail.
- -i
- Make rpcbind insecure. You need this option to switch to
nonsecure mode. This option allows SET and UNSET from any host. Normally
rpcbind accepts these requests only from the loopback interface
for security reasons. This change is necessary for programs that were
compiled with earlier versions of the RPC library and don't make those
requests using the loopback interface.
- -l
- Log security related events to the system log (syslog).
- -L
- Allow old-style local connections over the loopback interface.
Without this option, local connections are only allowed over a local socket
/var/run/rpcbind.sock.
- -s
- Cause rpcbind to change to the user daemon as soon as possible.
Using the rpcbind utility, you use nonprivileged ports for outgoing connections,
and prevent nonprivileged clients to connect to services
from a privileged port.
The rpcbind server converts RPC program numbers into universal
addresses. You must run this utility on the host to make RPC calls
on a server.
When an RPC service is started, it tells rpcbind the address at which it
is listening and the RPC program numbers it is prepared to serve. When
a client wishes to make an RPC call to a given program number, it first
contacts rpcbind on the server machine to determine the address where RPC
requests should be sent.
The rpcbind utility should be started before any other RPC service.
Normally, standard RPC servers are started by port monitors, so
rpcbind must be started
before port monitors are invoked.
When rpcbind is started, it checks that certain name-to-address
translation calls function correctly. If they fail, the network configuration
databases may be corrupt. Since RPC services cannot function correctly
in this situation, rpcbind reports the condition and terminates.
|
The rpcbind utility is secure by default, and can be started only by the superuser. |
Standard RPC servers can be run by inetd, so you must start
rpcbind before inetd is invoked.
The rpcbind utility needs /etc/netconfig,
as well as the following entries in /etc/services:
sunrpc 111/tcp rpcbind portmap
sunrpc 111/udp rpcbind portmap
It also requires the librpc shared library.
If you restart rpcbind, you must restart all RPC servers.
rpcgen, rpcinfo
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