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<!--
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* ldap.html
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*
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* Authors: Jivka Bojilova
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* Copyright: 2000 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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* For Details: http://www.nceas.ucsb.edu/
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* Created: 2000 April 5
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* Version: 0.01
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* File Info: '$Id$'
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*
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* October Meeting SDSC, 2000
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-->
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<HTML>
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<HEAD>
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<TITLE>Metacat</TITLE>
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<link rel="stylesheet" type="text/css" href="@docrooturl@default.css">
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</HEAD>
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<BODY>
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<table width="100%">
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<tr>
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<td class="tablehead" colspan="2"><p class="label">LDAP for User
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Authentication in Metacat</p></td>
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<td class="tablehead" colspan="2" align="right">
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<a href="./xmlindex.html">Back</a> |
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<a href="./metacattour.html">Home</a> |
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<a href="./metacatout.html">Next</a>
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</td>
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</tr>
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</table>
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<p><b>Network of LDAP servers</b></p>
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<p>In the distributed network of Metacat servers, network of LDAP servers
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is implemented as a distributed storage of Metacat's users.
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Any Metacat instance running on particular site is configured to use
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certain LDAP instance both usually running on the same host.
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Several Metacat instances can use one LDAP instance. </p>
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<P> <img src="KNB-LDAP-system-small.gif"> </p>
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<p>
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The distributed scheme of LDAP servers represents a hierarchy of nodes
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where in the leaves are the particular users used by the Metacat servers
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for authentication.
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<br>
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The LDAP tree starts from the root context for the Knowledge
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Network of Biocomplexity.:
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<pre> dc=ecoinformatics,dc=org </pre>
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The nodes on the second level represent the subtrees of the major Metacat
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sites such as NCEAS, LTER, etc.: </p>
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<pre>
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o=NCEAS,dc=ecoinformatics,dc=org <br>
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or <br>
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o=LTER,dc=ecoinformatics,dc=org </pre>
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Look at the example for the
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<a target="_top" href="entries-init.ldif">initial entries of KNB main tree</a>
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. <br><br>
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The third level contains the nodes of the particular users and groups.
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Users can be organized in groups. This allow Metacat to control access
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to a group of users.
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<pre>Definition of KNB development group at NCEAS:
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dn: cn=knb-dev,o=NCEAS,dc=ecoinformatics,dc=org
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objectClass: top
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objectclass: groupOfUniqueNames
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cn: knb-dev
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uniqueMember: uid=jones,o=NCEAS,dc=ecoinformatics,dc=org
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uniqueMember: uid=bojilova,o=NCEAS,dc=ecoinformatics,dc=org
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uniqueMember: uid=berkley,o=NCEAS,dc=ecoinformatics,dc=org
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uniqueMember: uid=higgins,o=NCEAS,dc=ecoinformatics,dc=org
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uniqueMember: uid=harris,o=NCEAS,dc=ecoinformatics,dc=org
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description: KNB development group at NCEAS </pre>
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Look at the example for a
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<a target="_top" href="entries-groups.ldif">group entry in KNB</a>.
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<br><br>
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<pre>Definition of a user from NCEAS subtree:
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dn: uid=bojilova,o=NCEAS,dc=ecoinformatics,dc=org
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objectClass: top
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objectclass: person
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objectClass: organizationalPerson
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objectClass: inetOrgPerson
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objectclass: uidObject
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uid: bojilova
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cn: Jivka Bojilova
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sn: Bojilova
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givenName: Jivka Bojilova
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title: Data Integration Developer </pre>
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Look at the example for <a target="_top" href="entries-users.ldif">
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user entries in KNB</a>.<br><br>
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Any LDAP subtree can reside on remote site. In that case the main tree holds
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referrals to all remotely running LDAP servers.
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<br><br>
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Look at the example for <a target="_top" href="entries-refs.ldif">
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referral entries in KNB</a>.<br><br>
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</p>
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<br>
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881
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