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Note
The above Trusted Networks will limit
Users
and
Administrators
access to the console serial
ports. They do not restrict access to the
console server
itself or to attached hosts. To change the
default settings for this access, you will to need to edit the
IPtables
rules as described in
Chapter
14—Advanced.
4.6 Serial Port Cascading
Cascaded Ports enables you to cluster distributed
console server
s. A large number of serial ports (up to
1000) can be configured and accessed through one IP address and managed through one Management
Console. One
console server
, the Master, controls other
console server
s as Slave units and all the serial
ports on the Slave units appear as if they are part of the Master.
Black Box’s clustering connects each Slave to the Master with an SSH connection. This uses public key
authentication so the Master can access each Slave using the SSH key pair (rather than using
passwords). This ensures secure authenticated communications between Master and Slaves, enabling
the Slave
console server
units to be distributed locally on a LAN or remotely around the world.
4.6.1 Automatically generate and upload SSH keys
To set up public key authentication, you must first generate an RSA or DSA key pair and upload them
into the Master and Slave
console server
s. This can all be done automatically from the Master.
Select
System: Administration
on Master’s Management Console.
Check
Generate SSH keys automatically
and click
Apply.
