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Network IP Address 204.15.5.0
Subnet Mask 255.255.255.255
If however you want to allow all the users operating from within a specific range of IP
addresses (say any of the thirty addresses from 204.15.5.129 to 204.15.5.158) to be
permitted connection to the nominated port:
Host /Subnet Address 204.15.5.128
Subnet Mask 255.255.255.224
Click Apply
Note The above Trusted Networks will limit access by Users and the Administrator to the console serial
ports. However they do not restrict access by the Administrator 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 the Chapter 14 - Advanced.
4.6 Serial Port Cascading
Cascaded Ports enables you to cluster distributed Console Servers so that a large number of serial ports
(up to 1000) can be configured and accessed through one IP address and managed through the one
Management Console. One Console Server, the Master, controls other Console Servers as Slave units
and all the serial ports on the Slave units appear as if they are part of the Master.
Each Slave connects to the Master with an SSH connection using public key authentication. So the
Master accesses each Slave using an SSH key pair, rather than using passwords, ensuring secure
authenticated communications. So the Slave Console Server units can be distributed locally on a LAN or
remotely over public networks 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 Servers. 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