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Barracuda Content Shield

How to Configure Barracuda DNS Nameservers for Barracuda Content Shield

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In order to use the Barracuda DNS Filtering Service with Barracuda Content Shield, you must direct your router, firewall, or your computer(s) (laptop / desktop) to the assigned Barracuda Domain Name Server (DNS). The IP address for the Barracuda DNS nameserver is shown on the Configure DNS step (3) of the Add Location popup, which you access on the DNS FILTERING page.

Important: If you do not configure the primary DNS nameserver as described in this article, then forwarding user web traffic will stop internet traffic from flowing. Make sure to configure user Locations on the DNS Filtering page so that when you forward the traffic, it will function properly.

Ensure DNS Traffic Is Routed from Clients to the Barracuda DNS Nameserver

Use one (or more) of the methods below. It is easier to configure the primary DNS nameserver at the network level rather than to configure on every client machine. You can also create a policy that only allows DNS requests to the Barracuda DNS nameservers as a means of preventing users from circumventing the service. You can also use a GPO or similar RMM tool to lock the DNS nameserver settings from being modified by end users.

Using DHCP and Proxying DNS Requests to Barracuda

If you are using DHCP, configure the DHCP server to provide the Barracuda DNS nameserver IP address to clients with their dynamic IP address.


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