ACCESS_ON(1)

NAME
access_on, access_off - allow or prevent remote connections to workstations

SYNOPSIS
access_on [ service [ protocol ] ]
access_off [ service [ protocol ] ]

DESCRIPTION
The access_on and access_off commands work in conjunction with inetd(8) to control remote connections to a Project Athena workstation. When run with no arguments, access_on will enable remote access for all services listed as switched in /etc/inetd.conf. Similarly, access_off will disable remote access for all switched services.

When a service is specified on the command line, only that service is enabled/disabled. For example, to enable ftp(1) access to a workstation while leaving all other services alone, a user would run ``access_on ftp''. When a protocol is specified on the command line, only that particular service/protocol pair will be enabled/disabled. Otherwise, all services that match the specified service are enabled/disabled.

The superuser can use access_on and access_off with arguments to enable/disable any services, not just those services that are switched. However, running either command with no arguments will still only affect switched services.

Usually, the switched services are for commands such as rlogin(1), rcp(1), telnet(1), or ftp. Furthermore, most workstations disable switched services by default. This protects the user from unexpected and possibly hostile remote connections.

FILES

/etc/inetd.conf
    List of services that can be enabled/disabled.

/etc/inetd.pid
    File containing the process ID of inetd, used by access_on/off to signal inetd.

/etc/inetd.sock
    Socket used by access_on/off to communicate with inetd when enabling/disabling specific services.

SEE ALSO
rlogin(1), rcp(1), telnet(1), ftp(1), inetd(8)