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Perl DNS Tools

There is an old slides by Cricket Liu  A Survey of DNS Tools  It contains a comparison of nslookup, dig, host, doc, dnswalk, dnsparse and h2n. Slides were presented in February 1993 so they are really old.

Personally I prefer Perl-based DNS tools and this page is devoted almost exclusively to them. For more general page please see an excellent  DNS tools site.

There are two supplementary pages for this page:

• Zone Generators
• DNS Audit Scripts

Dr. Nikolai Bezroukov

Old News ;-)

[Jun 19, 2008] DNSSEC-Tools 1.4 by Wes Hardaker

About: The DNSSEC-Tools package is a collection of tools, scripts, Perl modules, C libraries, and application patches that are useful for DNS zone administrators and end users to deploy DNS Security (DNSSEC).

Changes: Many improvements were made to the documentation, trust anchor management, key rollover, and zone signing. The validating library has received a number of improvements. There is a new shim library that can be used to bring any application into DNSSEC compliance without recompiling it. Many other changes were made

http://www.net-dns.org/

Net::DNS is a DNS resolver implemented in Perl. It allows the programmer to perform nearly any type of DNS query from a Perl script. For details and examples, please read the Net::DNS manual pages. To read about the latest features, see the Changes file. To find out about known bugs and to see what's planned for future versions, see the TODO file.

Net::DNS does not depend on any C libraries. However, if possible Net::DNS tries to link to the libresolv library. This provides a notable speed increase.

The author invites feedback on Net::DNS. If there's something you'd like to have added, please let me know. If you find a bug, please follow the instructions below.

The current release version of Net::DNS is: 0.58

New releases and developments are announced on the "Bl

RFC1713 Tools for DNS debugging

[fm] checkservice

Checkservice is a Perl script that monitors services on remote hosts. It uses plugins to provide a more thorough check than just a socket check, and can be configured to check multiple services on multiple hosts using two different methods (simple and extended). It is able to write logs and when running in the background enables warnings. It features a beep-, mail-, and SMS-warning system.

• http://www.linvision.com/checkservice/#downl

• ftp://ftp.luon.net/pub/admin/checkservice/

mkrdns An automatic reverse DNS zone generator

About: mkrdns is a small Perl script that helps automate changes to your DNS zone files. It does this by reading your named.boot/named.conf file to find all the domains/networks for which you are authoritative. It then reads all of the forward zone files and generates PTR records which it inserts in the reverse zone maps.

Changes: mkrdns incorrectly assumed that commands in named.conf files would be on seperate lines in some cases. This could cause mkrdns to ignore other multiple commands on a single line.

[Jan 28, 2006] DNS Sleuth a DNS checker.

With both a command-line interface and a web interface, sleuth will check whether the configuration of your DNS complies with the RFCs. It will give you warnings for some things and errors when it sees something completely wrong. The best part is it will tell you what is wrong and reference the RFC so you can see for yourself why it's bad and how to fix it. No more guessing if it's correct or not--fast and thorough. It requires Perl and the Net::DNS Perl module.

[Jul 14, 2005] Automating Windows (DNS) with Perl

Perl is a fantastic tool for system administrators -- even on Windows. Though the shiny GUI is astonishingly useless (or at least too mouse-friendly) for all but the simplest changes, there's plenty to automate under the shell. Thomas Herchenroeder explains how he wrapped dnscmd with Perl to make changes easily. [Perl.com]

Simple Dynamic DNS

Simple Dynamic DNS is a very light and simple set of Perl scripts to provide DNS support for users with dynamic IPs. The server is a CGI which waits for a client connection, then authenticates and changes the user IP. The cron script will check every N minutes for changes in the zones specified in the config files, and if any, it rebuilds the Bind zone from the latest updated IPs.

DNSSEC Walker

DNSSEC Walker is a tool to recover DNS zonefiles using the DNS protocol. The server does not have to support zonetransfer, but the zone must contain DNSSEC "NXT" or "NSEC" records. Optionally, it can also verify DNSSEC signatures on the RRsets within the zone.

LDAPDNS

ldapdns is a robust DNS server that forwards DNS requests to your LDAP directory. This means that changes to your LDAP directory will take affect immediately (no intermediate commands to run, and no cron jobs to wait for).

Sauron

Sauron is a free DNS/DHCP management system with Web and command line interfaces. It is able to manage multiple DNS/DHCP servers. Complete dhcpd and named configurations are generated from a central SQL database.

DOC

Checks the integrity of a domain; maintained by Brad Knowles.

This version works with BIND 9, but there is also a version for BIND 8. (version 2.2.3 of 25-Jul-2001, checked 08-Sep-2004)

dnswalk - a DNS database debugger- v. 2.02 of the dnswalk DNS debugger. It performs zone transfers of specified domains and checks the database in numerous ways.

• dnswalk 2.0.2

Recommended Links

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In case of broken links please try to use Google search. If you find the page please notify us about new location

• dnscvsutil
• dnscvsutil maintains your DNS zone files under CVS control, and automatically updates reverse zones.
• Sauron

  Sauron is a free DNS/DHCP management system with Web and command line interfaces. It is able to manage multiple DNS/DHCP servers. Complete dhcpd and named configurations are generated from a central SQL database.

• [Perl] DNSDusty

  DNSDusty is an uncomplicated Web-based DNS management tool. It does all of its modifications via signed dynamic updates, and gets info on zones via zone transfers. Thus, it does not require any external databases, and plays along well with other tools that do dynamic updates (such as DHCP). DNSDusty is written as a Perl CGI script, so it should work with most Web servers.

• freshmeat.net Project details for dnswalk

  dnswalk is a DNS debugger. It performs zone transfers of specified domains, and checks the database in numerous ways for internal consistency, as well as accuracy.

• mkdnstab DNS Table generator in Perl Jul 10th 1999, 00:28 stable: 0.3 - devel: none
  license: OpenSource
   
• http://www.visi.com/~barr/dnswalk/  Very useful script by David Barr. Can be used for internal DNS as it relies on being able to do zone transfers. See also RFC1713 Tools for DNS debugging, which was developed concurrently with this tool and which describes most of the kinds of problems it detects.
   
• Dynamic DNS Perl Scripts
  This is the first release of some perl scripts that allow you to offer a Dynamic DNS
  service to your users, much like what ml.org offered with their DDNS service. It
  will allow you to update multiple domains, and multiple servers. Currently the
  client has been only tested with Linux, and the Server should be able to run on
  most platforms that meet the requirements of the other software packages.
   
• Dlint 1.4.0 -- This program analyzes any DNS zone you specify, and reports any problems it finds by displaying errors and warnings
   
• http://www.menandmice.com/2000/2100_dns_expert.html DNS Expert
   
• Salamon, Andrs. "Tools to manage DNS." 1999.URL: http://www.dns.net/dnsrd/tools.html (23 July, 2000).

• Name Server Configurator -- A set of scripts for easy DNS configuration.

• dnsutil 1.5 -- The dnsutil package is a collection tools designed to make administering DNS easier.

• mkrdns An automatic reverse DNS zone generator mkrdns is a small Perl script which reads your named.boot or named.conf file to find all domains/networks for which you are authoritative. Current released version: 3.3 (2002.07.09)

  About: mkrdns is a small Perl script that helps automate changes to your DNS zone files. It does this by reading your named.boot/named.conf file to find all the domains/networks for which you are authoritative. It then reads all of the forward zone files and generates PTR records which it inserts in the reverse zone maps.

  Changes: mkrdns incorrectly assumed that commands in named.conf files would be on seperate lines in some cases. This could cause mkrdns to ignore other multiple commands on a single line.

• http://www.net-dns.org/  Net::DNS is a DNS resolver implemented in Perl.
• nslint -- checks DNS files for syntax errors

  nslint is a lint-like program that checks DNS files for errors. DNS or Domain Name System generally maps names to IP addresses and E-mail addresses in a hierarchical fashion. Errors detected include missing trailing dots, illegal characters (RFC 1034), records without matching PTR records and vice-versa, duplicate names in a subnet, duplicate names for an address, names with cname records (RFC 1033), missing quotes, and unknown keywords.

• A collection of perl scripts to configure livingston routersterminal servers

• http://atrey.karlin.mff.cuni.cz/~mj/sleuth/

• Web2010 Tutorial Page
  • DNS Functions
     

• AIM from Andy Farrior is a set of perl scripts using dbm files and keeps track of hardware addresses, hostnames, primary managers, dns, bootp, etc. Link is broken

Etc

Commercial products

• DNS Boss -- is a commercial Java product that allows you to rapidly setup and maintain one or many DNS domains