Perle Systems DS1 - Manual (Page 39)

Setting Up Users
Configuring the Device Server 39
z UDP Entry 3
All hosts that have an IP Address that falls within the range of 172.16.1.75 to 172.16.1.80
and who listen to Port 33009 will receive UDP data from the serial device. No UDP data will be
sent to the serial device.
z UDP Entry 4
This entry is disabled since Direction is set to None .
If Direction is set to In or Both , and Port is set to 0 (zero), the Device Server will learn a host IP
Address and Port number based on the first UDP packet it receives and will then only send and/or
accept UDP data from that host.
Setting Up Users
You can create up to four users, in addition to the Admin user (who cannot be deleted).
A user can even represent a device, like a barcode or a card swipe device, that you want to be
authenticated.
User Accounts
When a serial device (like a dumb terminal or a barcode reader) is trying to access a host through the
Device Server, you will need to configure user accounts when users:
z are authenticated by the Device Server and then connect to a host.
z want a single or multiple session(s) on a host; here they initially login to the Device Server
before starting that session. The Device Server is used to configure and start the session.
When a host is accessing a serial device (like a modem or a server), you will need to configure user
accounts where users:
z are using a reverse telnet connection to manage a UNIX server or a router.
User Levels
There are four User Levels : Admin , Normal , Restricted , and Menu . Setting up users is only
necessary when the users are actually connecting to the Device Server. Oftentimes, the Device Server
is used as a gateway to a network and the user never actually logs into the Device Server itself. Users
who do log into the Device Server (
Line Service set to DSLogin and User Service set to DSPrompt )
will have to navigate by either the Menu or CLI (except for users with Menu privileges, who can only
use the Menu).
z Admin—Users with Admin privileges have full administrative access to the IOLAN Device
Server. This is not the same as the Admin user, but has equal authority (the Admin user is a
permanent, factory-set user on the IOLAN Device Server).
z Normal—Users with Normal privileges have access to the Sessions menu and associated CLI
only. They can start sessions, define and predefine sessions, and can change their own user
environment.
z Restricted—Users with Restricted privileges have access to a restricted Sessions menu and
associated CLI; they can only open sessions predefined for them by the Admin user, but not alter
their own environment or sessions. Predefined sessions can also be configured to start
automatically at login.
z Menu—Users with Menu privileges have access to predefined session. All other functionality is
unavailable.
When the Admin user logs into the Device Server, the prompt ends with a # , whereas all other users’
prompts ends with a $ or £ , depending on the character set.