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31 In-line Signing With NSEC3 in BIND 9.9+ -- A Walk-through

Introduction As of version 9.9, the BIND package supports three different methods of signing zones. Manual signing, initiated by the name server administrator from the command line, has been supported since BIND first added support for DNSSEC. BIND 9.7 added…

32 How can I check the default option values in named.conf?

There isn't any command for bind that will list all named.conf options and their default settings, but checking the defaults can sometimes be helpful in understanding why BIND is doing something that you didn't expect it to, particularly if you've recently…

33 Performance: Multi-threaded I/O

Starting in BIND 9.9.0, ISC has made some important changes regarding performance of BIND on multi-core machines. Among these is internal scaling of network traffic. This article describes this change. This feature is not available on the Windows version…

34 Inline Signing in ISC BIND 9.9.0 -- Examples

When DNSSEC was first introduced, the only way to sign DNS data was using the 'dnssec-signzone' utility; this would take an unsigned zone file and generate a new zone file containing signatures. This file would be loaded by named and served the same as any…

35 Changes to NS RRset caching strategy in BIND 9.6-ESV-R6, 9.7.5, 9.8.2 and 9.9.0

Introduction: In the DNS a parent zone is authoritative for the presence of a delegation (NS RRset in the parent zone) but the child zone is authoritative for the contents of the NS RRset. These NS RRsets are supposed to be loosely synchronised with both…

36 BIND9 Knowledge Articles

Are you looking for more technical information about BIND9? The BIND9 Knowledge Articles category contains more in-depth information about BIND9 than is found in our FAQs - but the majority of this content is only available once you have registered (registration…

37 Filter AAAA option in BIND 9

AAAA Filtering When acting as a resolver, BIND 9 has an option to filter AAAA (IPv6 address) records returned to the client, based on the transport used for the query (IPv4 or IPv6) and other filtering conditions. This filtering does not affect the recursive…

38 Performance testing of recursive servers using queryperf

In this article: Why measure query performance? What tools are available for measuring query performance? Setting up a test environment Some notes on how queryperf operates Building queryperf queryperf parameters explained Example How to create the query…

39 How to determine BIND query rates (qps)

Question: How can I find out what query rate my BIND nameserver is handling? Answer: This answer is incomplete There are other ways of determining the QPS of a server. This answer provides guidance for the one that is expected to be applicable to the most…

40 Why is BIND logging "adb: grow_entries to <number>" and "adb: grow_names to <number>"?

Question: Since installing a new version of BIND, I'm getting the following informational messages on starting named. What do they mean? 18-Nov-2011 03:35:14.872 database: info: adb: grow_entries to 1531 starting 18-Nov-2011 03:35:14.874 database: info: adb:…