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1 Eleven, twelve; dig and delv: BIND 9.10

Delv Surely you remember the old nursery rhyme that begins with "One, two, buckle my shoe". You might have forgotten that its sixth verse is "Eleven, twelve, dig and delve". How many nursery rhymes have their own Wikipedia page? BIND 9.10 contains a new debugging…

2 NXDOMAIN Redirection Using DLZ in BIND 9.10

NXDOMAIN redirection is a BIND feature providing the ability for a recursive server to replace an NXDOMAIN response to a query with a configured answer of its own. This substitute response is returned to the original client in place of the NXDOMAIN response…

3 Using the GeoIP Features in BIND 9.10

BIND 9 access control lists are used to limit access to various server functions according to the IP address of the requestor of that access. BIND 9.10 is able to use data from MaxMind GeoIP databases to achieve restrictions based on the (presumed) geographic…

4 Introducing the named-rrchecker tool in BIND 9.10

The new "named-rrchecker" tool can be used to verify the syntactic correctness of individual resource records, or to convert them into a canonical format so that a newly defined record type can be loaded into an older name server that doesn't recognize it.…

5 Operating statistics provided by BIND 9.10 statistics channels

BIND listens for queries on Port 53. It listens for communication from RNDC on port 953. And it can be configured to listen for statistics requests on another port, typically port 80. To configure BIND so that it will offer statistics to clients that connect…

6 Early refresh of cache records (cache prefetch) in BIND 9.10

A DNS resolver (recursive server) looks up information for its clients. When it finds an answer, it keeps a copy cached locally in addition to returning the answer to the requesting client. This ensures that if another request for the same information arrives,…

7 DNSRPZ performance and scaleability when using multiple RPZ zones

BIND 9.10 can be configured to have response policies. That means that it can be configured to give responses that are different depending on the identity of the querying client and the nature of the query. To configure BIND response policy, you put the information…

8 Using the 'map' zone file format in BIND 9.10

What is a zone file format? A zone file is used to store the resource records for a zone. On a master server, the zone file is created externally to BIND, and is usually kept in text format for convenience and flexibility in maintaining it. A master server…

9 New Features in BIND 9.10

Response-rate limiting (DNS RRL) is now available by default ISC introduced the Response Rate Limiter into earlier versions of BIND as a configurable option. It was not automatically available. RRL has proven to be so valuable and effective that it is now…