Users connecting to serial devices, Users connecting to the lan, Connecting to the device server – Perle Systems DS1 User Manual
Page 36
Users Connecting to Serial Devices
36
IOLAN Device Server User’s Guide, Version 1.0
Users Connecting to Serial Devices
For a user to connect to the serial device connected to the Device Server from the LAN, the
Line
Service
must be set to
Rev Telnet
. The user will either access the serial device directly or go through
the Easy Port Access Menu, depending on the
User Level
setting.
Users who are
Level Admin
or
Normal
will access the serial device directly; the user must connect to
the Device Server’s IP address and port number (the
DS Port
parameter). The user will be asked to
login with a user name and password; if this is successful, the user is automatically connected to the
serial device.
Users who are
Level Restricted
or
Menu
can access the serial device through the Easy Port Access
Menu, which displays the line number and name and a logout option; the user just needs to connect to
the Device Server’s IP address. The user will be asked to login with a user name and password; if this
is successful, the Easy Port Access Menu is displayed. Note: if the
Line Service
is
Rev Telnet
and
the user uses SSH to connect to the Device Server, nothing but
Logout
will be displayed on the Easy
Port Access Menu; the connection protocol and the Line protocol must match.
Users Connecting to the LAN
For a user to connect to the LAN through the Device Server from a serial device, the
Line Service
can be set to any
Direct
or
Silent
setting, plus
Bidir
or
DSLogin
.
User accounts should be created when:
z
authentication is being done locally by the Device Server.
z
you want to create predefined sessions for a user to limit that user’s access to the network.
Connecting To the Device Server
When a user connects to the Device Server, that user is authenticated and is usually set up with
predefined sessions or given the opportunity to configure a
Free Session
to access any host using
any protocol (must have a
Level
of at least
Normal
to configure a
Free Session
). In this example, the
user must have a
Line
and
User Service
of
DSLogin
and
DSPrompt
, respectively. So, user Dennis is
authenticated by the Device Server and then chooses to configure a
Free Session
to the HR_Server
using the Telnet protocol (Dennis could have attempted to access any host on the network).
Network
Device Server
HR_Server
per
le
Dennis
User: Dennis
Free Session: Telnet
Dumb Terminal