RPC Services Security Concerns

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Operating Systems Linux RPC Services Security Concerns

11-14-2016

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LEARN ABOUT FREEBSD

rwall

RWALL(1)						    BSD General Commands Manual 						  RWALL(1)

NAME

     rwall -- send a message to users logged on a host

SYNOPSIS

     rwall host [file]

DESCRIPTION

     The rwall command sends a message to the users logged into the specified host.  The message to be sent can be typed in and terminated with
     EOF or it can be in a file.

DIAGNOSTICS

     rwall: RPC: Program not registered  The rpc.rwalld(8) daemon has not been started on the remote host.

     rwall: RPC: Timed out  A communication error occurred.  Either the network is excessively congested, or the rpc.rwalld(8) daemon has termi-
     nated on the remote host.

     rwall: RPC: Port mapper failure - RPC: Timed out  The remote host is not running the portmapper (see rpcbind(8)), and cannot accommodate any
     RPC-based services.  The host may be down.

SEE ALSO

     who(1), rpc.rwalld(8), rpcbind(8)

HISTORY

     The rwall command appeared in Sun-OS.

BUGS

     The sorting options are not implemented.

BSD
								  April 23, 1991							       BSD

Linux