### Controlling Access to Outbound Ports

This section describes methods for controlling access to outbound serial ports. An outbound port is one defined on the dev field of the set ports command for one of the following device types:

- prn (used to define printer connections)
- mout (used to define outbound modem connections
- mio (used to define bi-directional modem connections)
- host (used to define host connections)

#### Default Access

The default for outbound ports is unlimited access.

#### Restricting Access to Outbound Ports

Use the set auth command to restrict access to outbound ports.

#### Example

In this example, the user identified with the IP address specified must log into ports 1 - 8 before using the ports.

`set auth ip=199.150.150.16 login=1-8.`