2006-12-23 05:42:10 +00:00
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta name="generator" content=
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"HTML Tidy for Linux (vers 12 April 2005), see www.w3.org" />
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<title>
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ldap2dns
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</title>
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</head>
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<body>
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<div id="project">
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<script src="/toc.js" type="text/javascript">
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</script>
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<h1 align="center">
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LDAP to DNS gateway
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</h1>
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<p style="font-size: 14px">
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<b>ldap2dns</b> is a program to read DNS (Domain Name
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Service) records from an LDAP directory and format them
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into flat files suitable for TinyDNS (or Bind).
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</p>
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<p>
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<b>ldap2dns</b> reduces all kind of administration
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overhead: No more flat file editing, no more zone file
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editing. After having installed <b>ldap2dns</b>, the
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administrator only has to modify the data stored in the
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LDAP directory.<br />
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<br />
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Optionally access control can be configured for each zone,
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GUIs can be more easily implemented, and add all other kind
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of zone and resource record information can be managed
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without interfering with the DNS server.<br />
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<br />
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<b>ldap2dns</b> is designed to write ASCII data files used
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by <a href=
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"http://cr.yp.to/djbdns/tinydns.html"><i>tinydns</i></a>
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from the <a href="http://cr.yp.to/"><i>djbdns</i></a>
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package, but also may be used to write zone db files used
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by <i>named</i> as found in the <i>BIND</i> package.
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</p>
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<p>
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<b>ldap2dns</b> is known to compile and run under Linux and
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Solaris using GCC or Sun Studio C Compiler.
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</p>
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<div id="toc"></div><script language="JavaScript" type=
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"text/javascript">
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//<![CDATA[
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2005-12-22 20:35:09 +00:00
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<!--
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document.write(addEntry('Introduction', 'Introduction'));
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// -->
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2006-12-23 05:42:10 +00:00
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//]]>
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</script> <noscript>
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<h3>
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Introduction
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</h3></noscript> Often it is desirable to store DNS
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information in a database rather than in flat text files.
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This can greatly help to reduce administration overhead since
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associate information such as billing contact, account
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management, etc. can be stored and processed inside the same
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database. Also due to the nature of DNS, information must be
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stored redundantly on two or more hosts. The classical data
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replication through zone transfer is unreliable, insecure and
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difficult to administer.<br />
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<br />
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To solve this problem some proprietary attempts have been
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proposed to store DNS information in relational databases.
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The nature of DNS, however, is hierarchical and such should
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the database be. Using a relational database to store DNS
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information is undesirable, because it becomes difficult to
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store free form information. Within a hierachical data
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scheme, the administrator might define more than one
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IP-address for each canonical name. To implement such a
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feature in a relational database without breaking the
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normalization rules, one would have to add another
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table.<br />
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<br />
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One of the most widely spread hierarchical database protocols
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is LDAP. <b>ldap2dns</b> retrieves DNS information stored in
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an LDAP directory service and generates a file suitable for
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name-servers.<br />
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<br />
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The two most-widely-used domain name service daemons,
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<a href="http://www.isc.org/products/BIND/">named</a> and
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<a href="http://cr.yp.to/djbdns/tinydns.html">tinydns</a> are
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supported.<br />
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<br />
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<b>ldap2dns</b> specifically has been designed to work with
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tinydns and is the favored name server daemon for the author
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of this program. <b>ldap2dns</b> can also generate files
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suitable for <i>named</i> version 8 (and possibly version 9),
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but this feature is not well supported.<br />
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<br />
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There is a <a href=
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"http://www.alternic.org/drafts/drafts-m-n/draft-miller-dns-ldap-schema-00.txt">
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RFC</a> for a format description how to store DNS information
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in LDAP. This paper a draft RFC which expired in February
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1999, looks as if it has been specially designed to be used
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by <i>named</i>. This scheme does not have strict
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attribute-value-pair mapping, making it difficult to be used
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by user interfaces. It also lacks of an implementation (or I
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have never heard of any).<br />
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Since <i>tinydns</i> is going another descriptive way the
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original author implemented a similar object-scheme more
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suitable for <i>tinydns</i>.<br />
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<script language="JavaScript" type="text/javascript">
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//<![CDATA[
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2005-12-22 20:35:09 +00:00
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<!--
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document.write(addEntry('Quickstart', 'Quickstart'));
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// -->
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2006-12-23 05:42:10 +00:00
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//]]>
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</script> <noscript>
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<h3>
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Installation
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</h3></noscript>
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<ul>
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<li>Install an LDAP server such as <a href=
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"www.openldap.org">openldap</a>. Other LDAP implementations
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may work but have not been tested. If you are building from
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source you will need to also install the development
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libraries and include files. On most package based systems
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these would be the -devel packages (example:
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openldap-devel).<br />
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</li>
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<li>Install <a href=
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"http://cr.yp.to/djbdns.html">djbdns</a> or BIND.
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Configuring the nameserver to automatically start and work
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in your environment is beyond the scope of this
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document.<br />
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</li>
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<li>Install <b>ldap2dns</b><br />
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From RPM:<br />
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<pre>
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$ sudo rpm -Uhv ldap2dns.rpm
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</pre>Replace "ldap2dns.rpm" with the file you have
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downloaded.<br />
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Now that you have it installed, skip to <a href=
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"#Configuration">Usage</a> to continue.<br />
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<br />
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To build ldap2dns from source:<br />
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Unpack the package and build it:
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<pre>
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2005-12-22 20:35:09 +00:00
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$ gzcat ldap2dns.tar.gz | tar x
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$ cd ldap2dns-version
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$ make
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2006-12-23 05:42:10 +00:00
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$ sudo make install
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2005-12-22 20:35:09 +00:00
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</pre>
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2006-12-23 05:42:10 +00:00
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</li>
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</ul><br />
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<script language="JavaScript" type="text/javascript">
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//<![CDATA[
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<!--
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document.write(addEntry('Configuration', 'Configuration'));
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// -->
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//]]>
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</script> <noscript>
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<h3>
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Configuration
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</h3></noscript>
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<ul>
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<li>Copy the file <i>ldap2dns.schema</i> into the directory
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/etc/openldap/schema. Add the following line to Your
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slapd.conf file:<br />
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<pre>
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2005-12-22 20:35:09 +00:00
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include /etc/openldap/schema/ldap2dns.schema
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2006-12-23 05:42:10 +00:00
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</pre>Now restart your LDAP server.<br />
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</li>
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</ul><i>Note: If you are running OpenLDAP 2.0 or earlier look
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for appropriate schema files for your version in the
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<b>deprecated/</b> subdirectory. These files are known to
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work as of ldap2dns 0.3.5 but are no longer supported for
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future feature updates.</i><br />
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<br />
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<ul>
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<li>Start to populate your LDAP server with DNS
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information. As a first test do
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<pre>
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$ ldapadd -D "<i>binddn</i>" -w <i>password</i> < example.ldif
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</pre>Replace 'myorg' and 'binddn' with whatever is appropriate on
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Your system. Start a search and see if something was added
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<pre>
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2005-12-22 20:35:09 +00:00
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$ ldapsearch -D "<i>binddn</i>" "objectclass=dnsrrset"
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</pre>
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2006-12-23 05:42:10 +00:00
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</li>
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<li>Test <b>ldap2dns</b>
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<pre>
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$ ./ldap2dns -D "<i>binddn</i>" [ -b "<i>searchbase</i>" ] [ -w <i>passwd</i> ] -o data -o db -L
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</pre>This should create a 'data' file, a 'corp.local.db' file and
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should print the DNS content.<br />
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Note: The <i>data</i> file is text data which can be
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processed with <b>tinydns-data</b>. <i>corp.local.db</i>
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is the file as used by <b>named</b>. If You are using
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bind, You also have to adopt the file
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<i>/etc/named.conf</i> and You have to restart named.
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</li>
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</ul><br />
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<br />
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<script language="JavaScript" type="text/javascript">
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//<![CDATA[
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2005-12-22 20:35:09 +00:00
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<!--
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2006-12-23 05:42:10 +00:00
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document.write(addEntry('Schema', 'Schema Documentation'));
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2005-12-22 20:35:09 +00:00
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// -->
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2006-12-23 05:42:10 +00:00
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//]]>
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</script> <noscript>
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<h3>
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Schema Documentation
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</h3></noscript> Two object-classes have been defined.
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<em>DNSzone</em> stores all the information to define a DNS
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zone, such as the SOA (Start Of Authority), serial numbers
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etc. <em>DNSrrset</em> is used to store the information for a
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single resource record, such as the domain name,
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IP-addresses, class and type.<br />
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Here are the tables:
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<h4>
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DNSzone
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</h4>This object-class represents a DNS zone. It is the
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container for all the resource records within a zone. Zones
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can be primary or secondary. If used in conjunction with
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<i>tinydns</i> zones are always primary. Secondary zones
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don't make sense anyway! In addition to being a container,
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the zone object has attributes related to the management of
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the zone. These include the zone's SOA information. Each
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zone-object can have none to many children of class
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<b>DNSrrset</b>.<br />
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<table bgcolor="#EEEEEE" summary=
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"LDAP attributes used by DNS zones">
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<tr>
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<th>
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ATTRIBUTE
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</th>
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<th>
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VALUE
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</th>
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<th>
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Comment
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</th>
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</tr>
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<tr>
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<td>
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objectclass
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</td>
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<td>
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DNSzone
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</td>
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<td>
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required
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</td>
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</tr>
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<tr>
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<td>
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cn
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</td>
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<td>
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<i>common name</i>
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</td>
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<td>
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required
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</td>
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</tr>
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<tr>
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<td>
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DNSzonename
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</td>
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<td>
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<i>Name of the zone</i>
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</td>
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<td>
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required, multivalued
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</td>
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</tr>
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<tr>
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<td>
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DNSserial
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</td>
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<td>
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<i>Serial number of SOA</i>
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</td>
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<td>
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optional
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</td>
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</tr>
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<tr>
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<td>
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DNSrefresh
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</td>
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<td>
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<i>Refresh time of SOA</i>
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</td>
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<td>
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optional, only used for zone transfers
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</td>
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</tr>
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<tr>
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<td>
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DNSretry
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</td>
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<td>
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<i>Retry time of SOA</i>
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</td>
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<td>
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optional, only used for zone transfers
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</td>
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</tr>
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<tr>
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<td>
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DNSexpire
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</td>
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<td>
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<i>Expire time of SOA</i>
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</td>
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<td>
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optional, only used for zone transfers
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</td>
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</tr>
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|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSminimum
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>Minimum time to live</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional, only used for zone transfers
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSadminmailbox
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>Hostmaster's contact address</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSzonemaster
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>Primary nameserver for this zone</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNStype
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
SOA
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
must be SOA
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSclass
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
IN
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
must be IN
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSttl
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>time to live</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional, only used with tinydns
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNStimestamp
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>timestamp</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional, only used with tinydns
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table>
|
|
|
|
|
<ul>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSzonename:</b> This field is required to describe
|
|
|
|
|
the zone's domain name, for instance myorg.com. More than
|
|
|
|
|
one <b>DNSzonename</b> my be specified for a
|
|
|
|
|
<b>DNSzone</b> so that the same host is accessable with
|
|
|
|
|
different zonenames.
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSserial:</b> This is the serial number as used for
|
|
|
|
|
BIND's zone transfers. Here it is used to inform
|
|
|
|
|
<b>ldap2dns</b> that it has to rebuild its data-file.
|
|
|
|
|
Without increasing the serial number <b>ldap2dns</b> will
|
|
|
|
|
ignore all modifications until it is restarted.
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSrefresh, DNSretry, DNSexpire, DNSminimum:</b> You
|
|
|
|
|
may safly ignore these numbers if You don't do
|
|
|
|
|
zone-transfers. Since Your secondary nameserver will
|
|
|
|
|
connect to the LDAP server the same way Your primary
|
|
|
|
|
does, You don't need zone-transfers anyway.
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSzonemaster:</b> Here you specify the canonical name
|
|
|
|
|
of your primary nameserver.
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSadminmailbox:</b> This is the contact address of
|
|
|
|
|
Your DNS-administrator. The first dot is converted to a
|
|
|
|
|
<i>@</i>.
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNStype:</b> Must be <b>SOA</b> (Start Of Authority)
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSclass:</b> Must be <b>IN</b> (Internet, or do still
|
|
|
|
|
use Chaosnet?)
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSttl:</b> This is the time-to-live value as used by
|
|
|
|
|
<b>tinydns</b>. If TTL is nonzero (or omitted), the
|
|
|
|
|
timestamp is a starting time from whereon this zone's
|
|
|
|
|
information is valid. If TTL is zero, the timestamp is an
|
|
|
|
|
ending time (``time to die'').
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNStimestamp:</b> This is the timestamp as used by
|
|
|
|
|
<b>tinydns</b>. It represents a string as external TAI64
|
|
|
|
|
timestamp, printed as 16 lowercase hexadecimal characters
|
|
|
|
|
</li>
|
|
|
|
|
</ul>
|
|
|
|
|
<h4>
|
|
|
|
|
DNSrrset
|
|
|
|
|
</h4>The Resource Record Set represents all of the resource
|
|
|
|
|
records for a given host name within a zone. It must be a
|
|
|
|
|
child of a DNSzone object.<br />
|
|
|
|
|
<table bgcolor="#EEEEEE" summary=
|
|
|
|
|
"LDAP attributes for DNS records">
|
|
|
|
|
<tr>
|
|
|
|
|
<th>
|
|
|
|
|
ATTRIBUTE
|
|
|
|
|
</th>
|
|
|
|
|
<th>
|
|
|
|
|
VALUE
|
|
|
|
|
</th>
|
|
|
|
|
<th>
|
|
|
|
|
Comment
|
|
|
|
|
</th>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
objectclass
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
DNSrrset
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
required
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
cn
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>common name</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
required
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSdomainname
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>Name of this record</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional, relative to zonename
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSipaddr
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>IP address</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional, mutivalued
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNScname
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>Canonical name</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional, without ending dot relative to zonename
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSpreference
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>integer</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional, only used for MX records
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNStype
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
A, CNAME, NS, MX, PTR or TXT
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
must be any valid record type
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSclass
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
IN
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
must be IN
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSttl
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>time to live</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional, only used with tinydns
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNStimestamp
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>timestamp</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional, only used with tinydns
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSsrvpriority
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>SRV Priority</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional, defaults to 0 for <a href=
|
|
|
|
|
"http://www.menandmice.com/online_docs_and_faq/glossary/srv.record.htm">
|
|
|
|
|
SRV</a> records
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSsrvweight
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>SRV Weight</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
optional, defaults to 0 for <a href=
|
|
|
|
|
"http://www.menandmice.com/online_docs_and_faq/glossary/srv.record.htm">
|
|
|
|
|
SRV</a> records
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
<tr>
|
|
|
|
|
<td>
|
|
|
|
|
DNSsrvport
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
<i>SRV Port</i>
|
|
|
|
|
</td>
|
|
|
|
|
<td>
|
|
|
|
|
Required for <a href=
|
|
|
|
|
"http://www.menandmice.com/online_docs_and_faq/glossary/srv.record.htm">
|
|
|
|
|
SRV</a> records
|
|
|
|
|
</td>
|
|
|
|
|
</tr>
|
|
|
|
|
</table><br />
|
|
|
|
|
<ul>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSrrset:</b> This object-class must be a direct child
|
|
|
|
|
of DNSzone. Its <b>dn</b> should be specified as
|
|
|
|
|
<pre>
|
2005-12-22 20:35:09 +00:00
|
|
|
cn=<i>domainname</i>,cn=<i>zonename</i>,...
|
2006-12-23 05:42:10 +00:00
|
|
|
</pre>
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSdomainname</b> This is the partial domain-name, ie.
|
|
|
|
|
the part in front of the zone-name.
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSipaddr:</b> This specifies the IP-address in dotted
|
|
|
|
|
format. It can be used for <b>DNSrrset</b>'s of type
|
|
|
|
|
<b>A, NS, MX</b> or <b>PTR</b>. <b>DNSipaddr</b> is
|
|
|
|
|
multivalued to specifiy more than one IP-address for a
|
|
|
|
|
service. If used in <b>DNSrrset</b>'s with <b>DNStype</b>
|
|
|
|
|
= <b>PTR</b> it overrides the old-fashioned form used in
|
|
|
|
|
<b>DNSdomainname</b> such as 13.178.23.in-addr.arpa for
|
|
|
|
|
reverse lookups.
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNScname:</b> Whenever there is a mapping of a
|
|
|
|
|
domain-name to a canonical name, use this attribute.
|
|
|
|
|
<b>DNScname</b> may be used for <b>DNSrrset</b>'s with
|
|
|
|
|
<b>DNStype CNAME, NS, MX, PTR or TXT</b>. If the last
|
|
|
|
|
character of a CNAME is a dot its name is considered
|
|
|
|
|
absolute. If it does not contain a dot, its name is
|
|
|
|
|
prepended to the zone-name.
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSpreference:</b> This number is the mail-exchange
|
|
|
|
|
preference as used by BIND.
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNStype:</b> This must be <b>A, CNAME, NS, MX, PTR</b>
|
|
|
|
|
or <b>TXT</b>. It specifies the DNSrrset type.
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSclass:</b> Must be <b>IN</b>
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSttl:</b> This is the time-to-live value as used by
|
|
|
|
|
<b>tinydns</b>. If TTL is non-zero (or omitted), the
|
|
|
|
|
time-stamp is a starting time from where-on this zone's
|
|
|
|
|
information is valid. If TTL is zero, the timestamp is an
|
|
|
|
|
ending time (``time to die'').
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNStimestamp:</b> This is the timestamp as used by
|
|
|
|
|
<b>tinydns</b>. It represents a string as external TAI64
|
|
|
|
|
time-stamp, printed as 16 lowercase hexadecimal
|
|
|
|
|
characters
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSsrvpriority:</b> Integer representing the relative
|
|
|
|
|
priority of this DNS SRV record. See <a href=
|
|
|
|
|
"http://www.menandmice.com/online_docs_and_faq/glossary/srv.record.htm">
|
|
|
|
|
menandmice.com</a> for more information about DNS SRV
|
|
|
|
|
records.
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSsrvweight:</b> DNS SRV record weight field. Integer
|
|
|
|
|
</li>
|
|
|
|
|
<li>
|
|
|
|
|
<b>DNSsrvport:</b> DNS SRV record port number. Integer
|
|
|
|
|
</li>
|
|
|
|
|
</ul><br />
|
|
|
|
|
<script language="JavaScript" type="text/javascript">
|
|
|
|
|
//<![CDATA[
|
2005-12-22 20:35:09 +00:00
|
|
|
<!--
|
|
|
|
|
document.write(addEntry('ldap2dns', 'Usage: Running ldap2dns'));
|
|
|
|
|
// -->
|
2006-12-23 05:42:10 +00:00
|
|
|
//]]>
|
|
|
|
|
</script> <noscript>
|
|
|
|
|
<h3>
|
|
|
|
|
Usage: Running ldap2dns
|
|
|
|
|
</h3></noscript> <b>ldap2dns</b> and <b>ldap2dnsd</b>
|
|
|
|
|
recognize the following options:
|
|
|
|
|
<pre>
|
|
|
|
|
-D <i>binddn</i> specify the distinguished name to bind to the LDAP directory
|
|
|
|
|
-w <i>bindpasswd</i> use bindpasswd as password for simple authentication
|
|
|
|
|
-b <i>searchbase</i> use searchbase as starting point for search instead default
|
|
|
|
|
-o data generate a "data" file to be processed by tinydns-data
|
|
|
|
|
-o db for each zone generate a "<zonename>.db" file to be used by named
|
|
|
|
|
-L[<i>filename</i>] print output in LDIF format to [<i>filename</i>] or stdout for reimport
|
|
|
|
|
-h <i>host</i> specify the hostname of LDAP directory. Default is localhost
|
|
|
|
|
-p <i>port</i> portnumber to connect to LDAP directory. Defaults is 389
|
|
|
|
|
-H <i>ldapURI</i> URI for LDAP server (examples: <i>ldap://hostname</i> or <i>ldaps://hostname:636</i>)
|
|
|
|
|
-v run in verbose mode
|
|
|
|
|
-vv even more verbose
|
|
|
|
|
-V print version and exit
|
|
|
|
|
-u <i>numsecs</i> update DNS data every numsecs.
|
|
|
|
|
-t <i>timeout</i> timeout for LDAP searches, in seconds
|
|
|
|
|
-M <i>reclimit</i> Limit LDAP results to <i>reclimit</i> number of records.
|
|
|
|
|
</pre><b>ldap2dns</b> and <b>ldap2dnsd</b> recognize the following
|
|
|
|
|
environment variables:<br />
|
|
|
|
|
<b>TINYDNSDIR</b>: Specifies the directory where ldap2dns
|
|
|
|
|
writes its data file.<br />
|
|
|
|
|
<b>LDAP2DNS_UPDATE</b>: Specifies the update intervall as the
|
|
|
|
|
-u command line option would.<br />
|
|
|
|
|
<b>LDAP2DNS_OUTPUT</b>: Specifies the default output, as the
|
|
|
|
|
-o command line option would. <b>ldap2dns</b> and
|
|
|
|
|
<b>ldap2dnsd</b> use the following parameters from
|
|
|
|
|
/etc/ldap.conf if not specified on the command line:
|
|
|
|
|
<b>BASE</b>: The LDAP search base.<br />
|
|
|
|
|
<b>HOST</b>: The LDAP server.<br />
|
|
|
|
|
<b>PORT</b>: The LDAP port.<br />
|
|
|
|
|
<br />
|
|
|
|
|
If You are a tinydns user, run <b>ldap2dns</b> in
|
|
|
|
|
/services/tinydns/root.<br />
|
|
|
|
|
If You are an openldap user, the command line switches are
|
|
|
|
|
the same as for ldapsearch or ldapadd.
|
|
|
|
|
<pre>
|
|
|
|
|
$ ldap2dns -D "<i>binddn</i>" [ -w <i>passwd</i> ] -b "<i>searchbase</i>" \
|
2005-12-22 20:35:09 +00:00
|
|
|
-o data -e "cd /var/tinydns/root && /usr/bin/tinydns-data"
|
2006-12-23 05:42:10 +00:00
|
|
|
</pre>This generates a data file which is converted into a data.cdb
|
|
|
|
|
by tinydns-data as soon as ldap2dns detects a modification in the
|
|
|
|
|
LDAP directory. The password is required if You restrict read
|
|
|
|
|
queries to authenticated users only. Test with
|
|
|
|
|
<pre>
|
|
|
|
|
$ dnsq any corp.local <i>ipaddr</i>
|
|
|
|
|
</pre>Replace <i>ipaddr</i> with whatever You configured tinydns to
|
|
|
|
|
listen to. If You are a BIND user, run <b>ldap2dns</b> in
|
|
|
|
|
/var/named with
|
|
|
|
|
<pre>
|
|
|
|
|
$ ldap2dns -D "<i>binddn</i>" -w <i>passwd</i> -b "<i>searchbase</i>" \
|
2005-12-22 20:35:09 +00:00
|
|
|
-o db -e "kill -HUP `cat /var/run/named-pid`"
|
2006-12-23 05:42:10 +00:00
|
|
|
</pre>Do not forget to add You primary definition to your
|
|
|
|
|
named.conf file. Your named should be restarted automatically as
|
|
|
|
|
soon as ldap2dns detects a modification in the LDAP directory. If
|
|
|
|
|
bind is not restarted, do so with
|
|
|
|
|
<pre>
|
|
|
|
|
# kill -HUP <i>PID</i>
|
|
|
|
|
</pre>Now run
|
|
|
|
|
<pre>
|
2005-12-02 04:09:15 +00:00
|
|
|
$ nslookup - localhost
|
2006-12-23 05:42:10 +00:00
|
|
|
> ns1.corp.local
|
|
|
|
|
</pre>Note that <b>nslookup</b> only works with <b>tinydns</b> if
|
|
|
|
|
your nameserver resolves its IP-address backwards.
|
2005-12-22 20:35:09 +00:00
|
|
|
<script language="JavaScript" type="text/javascript">
|
2006-12-23 05:42:10 +00:00
|
|
|
//<![CDATA[
|
2005-12-22 20:35:09 +00:00
|
|
|
<!--
|
|
|
|
|
document.write(addEntry('ldap2dnsd', 'Usage: Running ldap2dnsd'));
|
|
|
|
|
// -->
|
2006-12-23 05:42:10 +00:00
|
|
|
//]]>
|
|
|
|
|
</script> <noscript>
|
|
|
|
|
<h3>
|
|
|
|
|
Usage: Running ldap2dnsd
|
|
|
|
|
</h3></noscript> When <b>ldap2dns</b> is invoked as
|
|
|
|
|
<b>ldap2dnsd</b>, the program starts as backgound-daemon and
|
|
|
|
|
continuously checks for modifications in the LDAP directory.
|
|
|
|
|
If the the daemon sees a modification in the <b>DNSserial</b>
|
|
|
|
|
numbers it updates the data or .db files, depending what kind
|
|
|
|
|
of output was configured. This check is done about once a
|
|
|
|
|
minute and is configurable.<br />
|
|
|
|
|
The command-line options for <b>ldap2dnsd</b> are the same as
|
|
|
|
|
for <b>ldap2dns</b>. Use the -u option to modify the update
|
|
|
|
|
interval. You may also use -u on <b>ldap2dns</b> to start as
|
|
|
|
|
a foreground daemon. This is useful if You want to run
|
|
|
|
|
<b>ldap2dns</b> from <b><a href=
|
|
|
|
|
"http://cr.yp.to/daemontools.html">daemontools</a></b>.<br />
|
|
|
|
|
<br />
|
|
|
|
|
These instructions assume you will be running <b>ldap2dns</b>
|
|
|
|
|
under <b>daemontools</b>b> and that tinydns is also
|
|
|
|
|
running under daemontools. These instructions also assume you
|
|
|
|
|
are using Dan Bernstein's standard directory locations. Make
|
|
|
|
|
sure you change the below examples to match your
|
|
|
|
|
environment.<br />
|
|
|
|
|
<br />
|
|
|
|
|
Start by creating the a non-root user to run your ldap2dns
|
|
|
|
|
and associated logging mechanism:
|
|
|
|
|
<pre>
|
2005-12-22 20:35:09 +00:00
|
|
|
# groupadd -r ldap2dns
|
|
|
|
|
# useradd -r -d /dev/null -s /bin/false -c "ldap2dns Daemon" \
|
|
|
|
|
-g ldap2dns ldap2dns
|
|
|
|
|
# groupadd -r l2dnslog
|
|
|
|
|
# useradd -r -d /dev/null -s /bin/false -c "ldap2dns Logger" \
|
|
|
|
|
-g l2dnslog l2dnslog
|
2006-12-23 05:42:10 +00:00
|
|
|
</pre><br />
|
|
|
|
|
Next configure the ldap2dns area to be managed by
|
|
|
|
|
<b>daemontools</b>. Typically this is <i>/etc/ldap2dns</i>
|
|
|
|
|
<pre>
|
2005-12-22 20:35:09 +00:00
|
|
|
# cd /etc
|
|
|
|
|
# ldap2tinydns-conf ldap2dns l2dnslog /etc/ldap2dns /etc/tinydns/root
|
2006-12-23 05:42:10 +00:00
|
|
|
</pre>The syntax is close to tinydns-conf except that you will also
|
|
|
|
|
need to specify the path to the <i>root</i> directory for tinydns.
|
|
|
|
|
This is the directory that holds the <i>data</i> file.<br />
|
|
|
|
|
<br />
|
|
|
|
|
Next edit the file <i>/etc/ldap2dns/run</i> and optionally
|
|
|
|
|
the environment variables in <i>/etc/ldap2dns/env</i> as
|
|
|
|
|
necessary for your environment. This may include configuring
|
|
|
|
|
a base DN, a bind DN, a password, and an interval.<br />
|
|
|
|
|
<br />
|
|
|
|
|
When everything is ready configured properly create a symlink
|
|
|
|
|
from <i>/etc/ldap2dns</i> into <i>/service</i>. This action
|
|
|
|
|
will cause <b>daemontools</b> to launch <b>ldap2dns</b>.
|
|
|
|
|
<pre>
|
2005-12-22 20:35:09 +00:00
|
|
|
# ln -s /etc/ldap2dns /service/ldap2dns
|
2006-12-23 05:42:10 +00:00
|
|
|
</pre>After a few seconds <b>daemontools</b> starts
|
|
|
|
|
<b>ldap2dnsd</b> which itself generates data files whenever a
|
|
|
|
|
modification is commited into the LDAP directory. <script language=
|
|
|
|
|
"JavaScript" type="text/javascript">
|
|
|
|
|
//<![CDATA[
|
2005-12-22 20:35:09 +00:00
|
|
|
<!--
|
|
|
|
|
document.write(addEntry('ImportingAXFR',
|
|
|
|
|
'Importing DNS data from an existing AXFR capable (BIND) name server'));
|
|
|
|
|
// -->
|
2006-12-23 05:42:10 +00:00
|
|
|
//]]>
|
|
|
|
|
</script> <noscript>
|
|
|
|
|
<h3>
|
|
|
|
|
Importing DNS data from an existing AXFR capable (BIND)
|
|
|
|
|
name server
|
|
|
|
|
</h3></noscript> A perl-script <i>import.pl</i> is contained
|
|
|
|
|
in this package. Edit the first lines of the script to
|
|
|
|
|
conform to Your configuration. If You have installed the Perl
|
|
|
|
|
packages Net::LDAP and Net::DNS skip the following lines,
|
|
|
|
|
otherwise do
|
|
|
|
|
<pre>
|
2005-12-02 04:09:15 +00:00
|
|
|
# perl -MCPAN -e 'shell'
|
|
|
|
|
(...snip...)
|
2006-12-23 05:42:10 +00:00
|
|
|
> install Net::DNS
|
|
|
|
|
> install Net::LDAP
|
|
|
|
|
</pre>Now check that Your nameserver allows zone transfers to your
|
|
|
|
|
host and run the import script:
|
|
|
|
|
<pre>
|
2005-12-02 04:09:15 +00:00
|
|
|
$ echo 'primary mydomain.org ' | ./import.pl
|
2006-12-23 05:42:10 +00:00
|
|
|
</pre>for a single domain or
|
|
|
|
|
<pre>
|
2005-12-02 04:09:15 +00:00
|
|
|
# cat named.boot | ./import.pl
|
2006-12-23 05:42:10 +00:00
|
|
|
</pre>to populate Your LDAP directory. <script language=
|
|
|
|
|
"JavaScript" type="text/javascript">
|
|
|
|
|
//<![CDATA[
|
2005-12-22 20:35:09 +00:00
|
|
|
<!--
|
|
|
|
|
document.write(addEntry('ImportingTinyDNS',
|
|
|
|
|
'Importing DNS data from an existing TinyDNS name server'));
|
|
|
|
|
// -->
|
2006-12-23 05:42:10 +00:00
|
|
|
//]]>
|
|
|
|
|
</script> <noscript>
|
|
|
|
|
<h3>
|
|
|
|
|
Importing DNS data from an existing TinyDNS name server
|
|
|
|
|
</h3></noscript> Use the supplied <i>data2ldap.pl</i> in the
|
|
|
|
|
<i>scripts/</i> directory
|
|
|
|
|
<pre>
|
2005-12-22 20:35:09 +00:00
|
|
|
$ data2ldap.pl data data.ldif ou=DNS,dc=example,dc=com
|
2006-12-23 05:42:10 +00:00
|
|
|
</pre>More to come...<br />
|
|
|
|
|
<br />
|
|
|
|
|
<script language="JavaScript" type="text/javascript">
|
|
|
|
|
//<![CDATA[
|
2005-12-22 20:35:09 +00:00
|
|
|
<!--
|
|
|
|
|
document.write(addEntry('Roadmap', 'Roadmap'));
|
|
|
|
|
// -->
|
2006-12-23 05:42:10 +00:00
|
|
|
//]]>
|
|
|
|
|
</script> <noscript>
|
|
|
|
|
<h3>
|
|
|
|
|
Roadmap
|
|
|
|
|
</h3></noscript> A browser-based administration toolkit,
|
|
|
|
|
which connects directly to the LDAP-directory service.
|
|
|
|
|
<script language="JavaScript" type="text/javascript">
|
|
|
|
|
//<![CDATA[
|
2005-12-22 20:35:09 +00:00
|
|
|
<!--
|
|
|
|
|
document.write(addEntry('ToDo', 'To Do'));
|
|
|
|
|
// -->
|
2006-12-23 05:42:10 +00:00
|
|
|
//]]>
|
|
|
|
|
</script> <noscript>
|
|
|
|
|
<h3>
|
|
|
|
|
To Do
|
|
|
|
|
</h3></noscript>
|
|
|
|
|
<ul>
|
|
|
|
|
<li>Write a man page.
|
|
|
|
|
</li>
|
|
|
|
|
<li>named.conf should be created automatically.
|
|
|
|
|
</li>
|
|
|
|
|
</ul><script language="JavaScript" type="text/javascript">
|
|
|
|
|
//<![CDATA[
|
2005-12-22 20:35:09 +00:00
|
|
|
<!--
|
|
|
|
|
document.write(addEntry('Copyright', 'Copyright and Disclaimer'));
|
|
|
|
|
// -->
|
2006-12-23 05:42:10 +00:00
|
|
|
//]]>
|
|
|
|
|
</script> <noscript>
|
|
|
|
|
<h3>
|
|
|
|
|
Copyright and Disclaimer
|
|
|
|
|
</h3></noscript> This program is Copyright 1999-2004 Jacob
|
|
|
|
|
Rief and 2005-2006 Ben Klang<br />
|
|
|
|
|
This program is licensed under the GPL version 2<br />
|
|
|
|
|
<br />
|
|
|
|
|
ldap2dns was originally written by Jacob Rief
|
|
|
|
|
(jacob.rief@tiscover.com). It is now maintained by Ben Klang
|
|
|
|
|
(bklang@alkaloid.net). If you run <b>ldap2dns</b> on a
|
|
|
|
|
production nameserver, please send the maintainer an email
|
|
|
|
|
and mention on what OS and with which nameserver you do
|
|
|
|
|
so.<br />
|
|
|
|
|
<br />
|
|
|
|
|
<b><i>Disclaimer:</i> The author and all contributors
|
|
|
|
|
disclaim any kind of warranty or liability or suitability for
|
|
|
|
|
any purpose. By running this software you agree that you are
|
|
|
|
|
a competent systems administrator and will bear the
|
|
|
|
|
responsibility for your actions.</b><br />
|
|
|
|
|
<script language="JavaScript" type="text/javascript">
|
|
|
|
|
//<![CDATA[
|
2005-12-22 20:35:09 +00:00
|
|
|
<!--
|
|
|
|
|
document.write(addEntry('Download', 'Download'));
|
|
|
|
|
// -->
|
2006-12-23 05:42:10 +00:00
|
|
|
//]]>
|
|
|
|
|
</script> <noscript>
|
|
|
|
|
<h3>
|
|
|
|
|
Download
|
|
|
|
|
</h3></noscript>
|
|
|
|
|
<h4>
|
|
|
|
|
Latest Release: <a href="/download.php?list.10">ldap2dns
|
|
|
|
|
version 0.4.1</a>
|
|
|
|
|
</h4>Released October 19, 2006<br />
|
|
|
|
|
<a href=
|
|
|
|
|
"http://svn.alkaloid.net/browse/chora/co.php?f=ldap2dns/tags/0.4.1/ChangeLog">
|
|
|
|
|
ChangeLog</a><br />
|
|
|
|
|
<br />
|
|
|
|
|
<h4>
|
|
|
|
|
Developer Access:
|
|
|
|
|
</h4>The bleeding edge of ldap2dns is in the Alkaloid
|
|
|
|
|
Networks subversion repository found at <a href=
|
|
|
|
|
"https://svn.alkaloid.net/gpl/ldap2dns/trunk">https://svn.alkaloid.net/gpl/ldap2dns/trunk</a>.<br />
|
|
|
|
|
|
|
|
|
|
<br />
|
|
|
|
|
Following the Subversion standard, releases are kept in
|
|
|
|
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/gpl/ldap2dns/tags and branches are in
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/gpl/ldap2dns/branches.<br />
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<br />
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</body>
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</html>
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