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59 lines
2.5 KiB
Plaintext
59 lines
2.5 KiB
Plaintext
Ldap configuration
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===================
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The configuration for authentication against an ldap server needs to be done
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the settings.xml file using a text editor. It cannot be edited from within the
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web gui.
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SeedDMS supports ldap authentication using an Active Directory (AD) or a
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regular ldap server, e.g. openldap
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The location of the ldap server is specified in two parameters: 'host' and
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'port'. 'host' can be either a plain hostname or an ldap URI, including the
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protocol, the host and optionally the port, e.g. ldap://localhost:389. In case
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of an URI the port in the configuration must remain empty.
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The authentication itself is a two step process which differs, depending on how
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to bind to the server. If the configuration sets 'bindDN' and 'bindPW', those
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values will be used for a initial non anonymous bind to the ldap server
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otherwise an anonymous bind is executed.
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After the initial bind, a ldap search for either 'uid=<username>' (ldap) or
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'sAMAccountName=<username>' (AD) below basedn is done. The purpose of this
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search is to retrieve a working bindDN which is then used to actually
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authenticate the user. In case of an anonymous first bind the search will
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likely fail and the bindDN for the second bind will be either
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'uid=<username>,<basedn>' (ldap) or '<username>@<accountDomainName>' (AD). If
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the search succeeds the bindDN will be taken from the user's data in the ldap
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server. This bindDN will be used for a second bind using the users password.
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If the second bind succeeds the user could be successfully authenticated.
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The data from the ldap server can be used to create an account in SeedDMS
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if the user trying to login does not exist yet, but was able to authenticate.
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This will only be done if 'authentication->restricted' in the configuration
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is set to true. In that case the common name (cn) and email address is taken
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from ldap. Existing accounts in SeedDMS will not be updated with data from
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ldap.
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Examples
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---------
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Anonymous bind to openldap on localhost, port 389
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- type = "ldap"
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- baseDN = "ou=users,dc=mycompany,dc=de"
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- host = "ldap://localhost"
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During authentication as user 'admin' the following steps are executed
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1. connect to ldap server at localhost:389
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2. do an anonymous bind
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3. search for 'uid=admin' below basedn
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4.1. if search succeeds use the dn from the user
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4.2. if search fails use 'uid=admin,<basedn>' as dn
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5. do a non anonymous bind with dn and password entered by user
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6. if step 5. succeeds the use is authenticated
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If bindDN and bindPW are specified in the configuration, the second step
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will be a non anonymous bind.
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