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Chapter 5: Serial Port, Host, Device, and User Configuration
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5.5 Trusted Networks
The Trusted Networks facility gives you an option to nominate specific IP addresses where users (Administrators and Users) must be located to
access console server serial ports.
Select Serial & Network: Trusted Networks. To add a new trusted network, select Add Rule.
Figure 5-18. Trusted networks screen.
Select the Accessible Port(s) that the new rule is to be applied to.
Then, enter the Network Address of the subnet to be permitted access.
Then, specify the range of addresses that are to be permitted by entering a Network Mask for that permitted IP range, for example:
To permit all the users located with a particular Class C network (for example, 204.15.5.0) connection to the nominated port then you would add
the following Trusted Network New Rule:
Network Address 204.15.5.0
Network Mask 255.255.255.0
If you want to permit only the one user who is located at a specific IP address (for example, 204.15.5.13 say) to connect:
Network Address 204.15.5.0
Network Mask 255.255.255.255
If, however, you want to allow all the users operating from within a specific range of IP addresses (for example, 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 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 15—Advanced Configuration.
5.6 Serial Port Redirection
To allow an application on a client PC to access the virtual serial ports on the console server, you need to run client software (to redirect the local
serial port traffic to remote console server serial port).
There’s a selection of commercial software available including Serial to Ethernet from Eltima (www.eltima.com
) and Serial/IP™ COM Port
Redirector from Tactical Software
(www.tacticalsoftware.com/products/serialip.htm).