Advanced configuration properties for LDAP Authentication
The TCP connection details of the LDAP server, as well as whether encryption should be used.
The base DN of all Guacamole users within the LDAP directory, and the attribute which contains each user's username. If the username attribute is not part of the DN, a search DN will need to be provided, as well.
The DN and password of the user to bind as when searching for the DN of each user attempting to log in. If omitted, the DN of each user will be derived directly using the user base DN and username attribute.
The base DN of all Guacamole user groups within the LDAP directory, and the attribute which contains each group's name. If storing connection information within LDAP, the provided base DN must also contain any groups that may be referenced within "guacConfigGroup" objects using the "seeAlso" attribute.
The maximum number of LDAP search results which can be returned by a single query. LDAP searches which exceed this limit will fail.
Arbitrary LDAP user attributes may be used to dynamically affect the behavior of connections based on the user accessing them. When a user authenticates with LDAP and subsequently accesses a particular Guacamole connection, the values of these attributes will be made available as parameter tokens and applied to the parameters of the connection. If the attribute has no value for the current user, then the corresponding token is not applied. If the attribute has multiple values, then the first value of the attribute is used.
These attributes must be configured for use as parameter tokens ahead of time by being explicitly listed within /etc/guacamole/guacamole.properties. By default, no LDAP user attributes are made available as parameter tokens.
The search filter which should be used to retrieve lists of users or groups from the LDAP directory. By default, a filter which matches all objects is used, and the only restriction is given through the relevant base DN. If you need to narrow the lists of users or groups further, the default filter can be overridden.
If overriding a search filter, be sure that the filter is a valid LDAP filter. In particular, an LDAP filter must be enclosed in a matching pair of parenthesis. If unsure whether your filter is valid, or if seeing unexpected results, it can be helpful to verify your filter against your LDAP server using a command-line utility like "ldapsearch".
Whether (and how) Guacamole should follow LDAP aliases or referrals when encountered during an LDAP query. By default, Guacamole will not dereference aliases and will not follow referrals.