ETHERNET(V2.1) — Silicon Graphics

NAME

ethernet − restrict/allow access to network

SYNOPSIS

ethernet [ local ] [ real ]

DESCRIPTION

ethernet allows/restricts access to the network by restricting the scope of rsh(1) and rcp(1). Usually this command is used to allow local rendering without interference from the network.

The user may either have total access to the network or no access. These two options can be indicated by the choice of an argument. The two optional arguments to the ethernet command are real for total network access and local for no network access. If no argument is given, the status of the network is given as ‘local’ or ‘real’.

When the status of the network is real, all user network services are executed normally(i.e. rsh, rcp). However, when the status of the network is local, the machine is "cut off" from the rest of the network and consequently all user network services are not executed as normal. If the status of the network is local, all remote requests are executed in terms of local commands on the localized machine( i.e. ‘rcp’ is executed as ‘cp’ and ‘rsh’ is executed as ‘sh’). Also, when the status of the network on the current machine is local, the machine is not accessible from any other machine on the network(The network status must be made real via ‘ethernet real’.

EXAMPLES

ethernet real

makes the status of the network real in respect to the current machine. All user network services are executed normally.

ethernet local

makes the status of the network local in respect to the current machine. All user network services are executed as non-remote versions of the same command (‘rcp’ is executed as ‘cp’).

ethernet

reports the current status of the network in respect to the current machine.

FILES

v2/sys/bin/ethernet
/usr/bin/rcp
/usr/bin/rsh
/usr/bin/rcp.real
/usr/bin/rsh.real
/usr/bin/rsh.local
/usr/bin/rcp.local