Maintained by: NLnet Labs

About Unbound

Unbound is a validating, recursive, and caching DNS resolver.

The C implementation of Unbound is developed and maintained by NLnet Labs. It is based on ideas and algorithms taken from a java prototype developed by Verisign labs, Nominet, Kirei and ep.net.

Unbound is designed as a set of modular components, so that also DNSSEC (secure DNS) validation and stub-resolvers (that do not run as a server, but are linked into an application) are easily possible.

The source code is under a BSD License.

Download

The latest source code tarball is available for download.

Bugs

Report bugs using bugzilla here.

Mailing List

You can subscribe to the unbound users mailing list here.

Browse the archives of unbound-users.

Support

Unbound is being maintained by NLnet Labs, a not for profit, public benefit foundation. Problems can be reported through the bugzilla webinterface. In the case we stop supporting the product we will announce such two years in advance.

Code Repository

The repository for unbound is available at http://unbound.nlnetlabs.nl/svn/.

The development tree is located in trunk/.

News

Release 1.0.2

Thu Aug 7 09:18:54 CEST 2008
Version 1.0.2 of unbound has been released

Release 1.0.1

Wed Jul 16 14:18:37 CEST 2008
Version 1.0.1 of unbound has been released

DNS Cache Poisoning Vulnerability

Wed Jul 9 2008
Statement about US-CERT Vulnerability Note VU#800113 and Unbound

Release 1.0.0

Tue May 20 10:00:00 CEST 2008
Version 1.0.0 of unbound has been released

Release 0.11

Thu Apr 24 15:30:12 CEST 2008
Version 0.11 of unbound has been released

Release 0.10

Mon Mar 3 13:06:33 CET 2008
Version 0.10 of unbound has been released

LibUnbound Tutorial

Wed Feb 13 11:14:49 CET 2008
A tutorial for libunbound is available

Release 0.9

Wed Feb 13 11:14:48 CET 2008
Version 0.9 of unbound has been released

Release 0.8

Wed Feb 13 11:14:47 CET 2008
Version 0.8 of unbound has been released

Release 0.7.2

Wed Jan 9 15:58:45 CET 2008
Version 0.7.2 of unbound has been released

Release 0.7.1

Wed Jan 2 13:38:31 CET 2008
Version 0.7.1 of unbound has been released

Release 0.7

Wed Jan 2 13:37:38 CET 2008
Version 0.7 of unbound has been released

Release 0.6

Wed Jan 2 11:04:59 CET 2008
Version 0.6 of unbound has been released

Unbound Website Design

Wed Jan 2 10:57:07 CET 2008
The www.unbound.net website now has a new design