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C H A P T E R
4
F E A T U R E S
For this example network, the DHCP relay parameters would be set as follows:
Example configuration of DHCP Relay parameters
Note that this configuration is required on both Node 1 and Node 2.
4.13.12 Telnet Access
The integration of an IP stack into the V100 allows the supervisor configuration screens to be accessed
through the 10/100base-T port using the telnet protocol. Telnet access is possible once IP has been
configured. To provide additional security to ensure that telnet access is only granted to the appropriate
parties, an Access Table has been provided. The Access Table must be configured to specify which station
or group of stations are allowed access to IP host facilities on the V100. Each access table entry comprises
a description (simple text – not used in the access decision), an IP address, an IP mask, and a service
definition. When an attempt is made to access the host service (e.g. a telnet connection is requested), the
access table is checked to ensure that an entry matches the requesting host. An IP address/mask pair of
0.0.0.0/0.0.0.0 will allow access from any station to the configured service. The services that are
controlled through this access are currently (i) the embedded telnet server, and (ii) "Chargen" (character
generator) TCP server.
The following example configuration shows two entries – one is allowing telnet access from any station –
the second is allowing Chargen access only from station 1.1.1.6:
V100 Versatile Multiplexer Technical Manual Version 2.2
Page 185 of 231
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