rbldnsd is a small and fast DNS daemon, made especially to serve DNSBL
zones. It was inspired by Dan J. Bernstein's rbldns program, found in
/usr/ports/net/djbdns, but is significantly faster.
rbldnsd was written by Michael Tokarev.
dnstable implements an encoding format for passive DNS data. It consists of a
C library, libdnstable, and several command line utilities for creating,
querying, and merging dnstable data files.
It stores key-value records in Sorted String Table (SSTable) files and provides
high-level interfaces for querying or iterating over the stored records.
dnstable encodes individual records using a format tailored for efficiently
storing passive DNS data and can quickly perform both "forward" and "inverse"
searches.
MyDNS is a free DNS server for UNIX implemented from scratch and
designed to utilize the MySQL database for data storage.
Its primary objectives are stability, security, interoperability,
and speed, though not necessarily in that order.
MyDNS does not include recursive name service, nor a resolver library.
It is primarily designed for organizations with many zones and/or
resource records who desire the ability to perform real-time dynamic
updates on their DNS data via MySQL.
ZoneCheck is intended to help solving misconfigurations or inconsistencies
of DNS zone files.
Features
* Powerful XML based configuration file (allowing changes in test severity,
order, zone of application, ...)
* Does not depend on policies
* Fine grained test selection (by test, by categories, by zones)
* Full IPv6 support (connectivity and AAAA records)
* Supports several input/output interfaces such as CLI, CGI
* Dedicated mode for use inside shell scripts
* Batch mode available (ideal when dealing with several domains)
* Use of stylesheets for easy integration and javascript for enhancement only
* Generates reports either by severity or by hosts
* I18N and L10N support (available: French, English)
* Multi-threaded application in order to cut down checking time
* Extensible: new tests, new interfaces, new reports, ...
* Exception and cache mechanisms to simplify test writting
axfr2acl transfers A records from the given DNS zones and converts them to
an ACL for use in BIND configuration files.
It is part of dnstools, a set of utilities for DNS management and related
tasks.
Python bindings for the dnstable library
This is pywdns, a Python extension module implemented in Cython for
the wdns C library.
pdnsd is a proxy dns server with permanent caching (the cache contents are
written to hard disk on exit) that is designed to cope with unreachable or
down dns servers (for example in dial-in networking).
pdnsd can be used with applications that do dns lookups, eg on startup, and
can't be configured to change that behavior, to prevent the often minute-long
hangs (or even crashes) that result from stalled dns queries. Some Netscape
Navigator versions for Unix, for example, expose this behavior.
pdnsd is configurable via a file and supports run-time configuration using the
program pdnsd-ctl that comes with pdnsd. This allows you to set the status
flags of servers that pdnsd knows (to influence which servers pdnsd will
query), and the addition, deletion and invalidation of DNS records in pdnsd's
cache.
Parallel name server queries are supported. This is a technique that allows
querying several servers at the same time so that very slow or unavailable
servers will not block the answer for one timeout interval.
Since version 1.0.0, pdnsd has full IPv6 support.
Ldns is a library to simplify implementation of recent DNS RFCs. The goal
is to allow depelopers to easily create software conforming to current RFCs
and experimental software for current Internet drafts.
Because ldns is written in C it should be a lot faster than Perl or other
scripting languages.
sshfp generates DNS SSHFP records from SSH public keys. sshfp can take public
keys from a knownhosts file or from scanning the host's sshd daemon. The ssh
client can use these SSHFP records if you set "VerifyHostKeyDNS yes" in the file
/etc/ssh/ssh_config.