Tripp Lite B097048 Owners Manual for B093- B097- and B098-Series Console Serve - Page 52
Serial Port Cascading
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4. Serial Port, Host, Device and User Configuration If you wish to allow all users operating from within a specific range of IP addresses (any of the 30 addresses from 204.15.5.129 to 204.15.5.158) to be permitted connection to the assigned 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 Administrators 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 section 14. Configuration from the Command Line. 4.6 Serial Port Cascading Cascaded Ports enable you to cluster distributed console servers so a large number of serial ports (up to 1000) can be configured and accessed through one IP address and managed through a single management console. The Primary console server controls other console servers as Secondary units and all the serial ports on the Secondary units appear as if they are part of the Primary. Tripp Lite's clustering connects each Secondary unit to the Primary unit via SSH connection. This is done using public key authentication so the Primary unit can access each Secondary unit using the SSH key pair (rather than using passwords). This ensures secure authenticated communications between Primary and Secondary units, enabling the Secondary units to be distributed locally on a LAN or remotely. 52