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Updated the LDAP auth module README.

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Sergio Benitez 2015-09-04 21:14:20 -07:00
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modules/auth/ldap/README.md
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@ -4,17 +4,30 @@ Gogs LDAP Authentication Module
## About ## About
This authentication module attempts to authorize and authenticate a user This authentication module attempts to authorize and authenticate a user
against an LDAP server. Like most LDAP authentication systems, this module does against an LDAP server. It provides two methods of authenitcation: LDAP via
this in two steps. First, it queries the LDAP server using a Bind DN and BindDN, and LDAP simple authentication.
LDAP via BindDN functions like most LDAP authentication systems.
First, it queries the LDAP server using a Bind DN and
searches for the user that is attempting to sign in. If the user is found, the searches for the user that is attempting to sign in. If the user is found, the
module attempts to bind to the server using the user's supplied credentials. If module attempts to bind to the server using the user's supplied credentials. If
this succeeds, the user has been authenticated, and his account information is this succeeds, the user has been authenticated, and his account information is
retrieved and passed to the Gogs login infrastructure. retrieved and passed to the Gogs login infrastructure.
LDAP simple authentication does not utilize a Bind DN. Instead, it binds
directly with the LDAP server using the user's supplied credentials. If the bind
succeeds and no filter rules out the user, the user is authenticated.
LDAP via BindDN is recommended for most users. By using a Bind DN, the server
can perform authorization by restricting which entries the Bind DN account can
read. Further, using a Bind DN with reduced permissions can reduce security risk
in the face of application bugs.
## Usage ## Usage
To use this module, add an LDAP authentication source via the Authentications To use this module, add an LDAP authentication source via the Authentications
section in the admin panel. The fields should be set as follows: section in the admin panel. Both the LDAP via BindDN and the simple auth LDAP
share the following fields:
* Authorization Name **(required)** * Authorization Name **(required)**
* A name to assign to the new method of authorization. * A name to assign to the new method of authorization.
@ -30,35 +43,58 @@ section in the admin panel. The fields should be set as follows:
* Enable TLS Encryption (optional) * Enable TLS Encryption (optional)
* Whether to use TLS when connecting to the LDAP server. * Whether to use TLS when connecting to the LDAP server.
* Bind DN (optional) * Admin Filter (optional)
* The DN to bind to the LDAP server with when searching for the user. * An LDAP filter specifying if a user should be given administrator
This may be left blank to perform an anonymous search. privileges. If a user accounts passes the filter, the user will be
* Example: cn=Search,dc=mydomain,dc=com privileged as an administrator.
* Example: (objectClass=adminAccount)
* Bind Password (optional)
* The password for the Bind DN specified above, if any.
* User Search Base **(required)**
* The LDAP base at which user accounts will be searched for.
* Example: ou=Users,dc=mydomain,dc=com
* User Filter **(required)**
* An LDAP filter declaring how to find the user record that is attempting
to authenticate. The '%s' matching parameter will be substituted with
the user's username.
* Example: (&(objectClass=posixAccount)(uid=%s))
* First name attribute (optional) * First name attribute (optional)
* The attribute of the user's LDAP record containing the user's first * The attribute of the user's LDAP record containing the user's first name.
name. This will be used to populate their account information. This will be used to populate their account information.
* Example: givenName * Example: givenName
* Surname name attribute (optional) * Surname attribute (optional)
* The attribute of the user's LDAP record containing the user's surname * The attribute of the user's LDAP record containing the user's surname This
This will be used to populate their account information. will be used to populate their account information.
* Example: sn * Example: sn
* E-mail attribute **(required)** * E-mail attribute **(required)**
* The attribute of the user's LDAP record containing the user's email * The attribute of the user's LDAP record containing the user's email
address. This will be used to populate their account information. address. This will be used to populate their account information.
* Example: mail * Example: mail
**LDAP via BindDN** adds the following fields:
* Bind DN (optional)
* The DN to bind to the LDAP server with when searching for the user. This
may be left blank to perform an anonymous search.
* Example: cn=Search,dc=mydomain,dc=com
* Bind Password (optional)
* The password for the Bind DN specified above, if any. _Note: The password
is stored in plaintext at the server. As such, ensure that your Bind DN
has as few privileges as possible._
* User Search Base **(required)**
* The LDAP base at which user accounts will be searched for.
* Example: ou=Users,dc=mydomain,dc=com
* User Filter **(required)**
* An LDAP filter declaring how to find the user record that is attempting to
authenticate. The '%s' matching parameter will be substituted with the
user's username.
* Example: (&(objectClass=posixAccount)(uid=%s))
**LDAP using simple auth** adds the following fields:
* User DN **(required)**
* A template to use as the user's DN. The `%s` matching parameter will be
substituted with the user's username.
* Example: cn=%s,ou=Users,dc=mydomain,dc=com
* Example: uid=%s,ou=Users,dc=mydomain,dc=com
* User Filter **(required)**
* An LDAP filter declaring when a user should be allowed to log in. The `%s`
matching parameter will be substituted with the user's username.
* Example: (&(objectClass=posixAccount)(uid=%s))