By using zone forward, DNS queries that cannot be answered locally can be forwarded directly to servers that are faster at answering them. This can speed up response times, especially if the local server does not have enough cache to handle the request.
Reducing the Load on Local DNS Servers
By forwarding some queries to other DNS servers, the load on local DNS servers can be reduced, allowing them to focus on queries that need to be handled locally.
Security and Separation of Services
Zone forwards also allow for separation between internal and external buy phone number list DNS servers, providing an additional layer of security. For example, internal queries can be handled by internal DNS servers, while external requests are forwarded to more open, publicly accessible DNS servers.
Handling Unrecognized Queries
When the local DNS server does not recognize or cannot process a particular query, a forward zone allows the query to still be forwarded and processed by the appropriate DNS server.
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Types of Zone Forward
There are several types of zone forward in DNS configuration that can be applied, including:
Single Forwarder
In this setting, the local DNS server will forward all unanswered queries to a single specified DNS server. This setting is best suited if there is only one external DNS server to rely on.