HP-UX Directory Server 8.1 administrator guide

6.4.9.1 Examples
The following are examples of the authmethod keyword:
• Authentication is not checked during bind rule evaluation.
authmethod = "none";
• The bind rule is evaluated to be true if the client is accessing the directory using a username
and password.
authmethod = "simple";
• The bind rule is evaluated to be true if the client authenticates to the directory using a
certificate over LDAPS. This is not evaluated to be true if the client authenticates using
simple authentication (bind DN and password) over LDAPS.
authmethod = "ssl";
• The bind rule is evaluated to be true if the client is accessing the directory using the SASL
DIGEST-MD5 mechanism.
authmethod = "sasl DIGEST-MD5";
6.4.10 Using Boolean bind rules
Bind rules can be complex expressions that use the Boolean expressions AND, OR, and NOT to set
very precise access rules. You cannot use the Directory Server Console to create Boolean bind
rules. You must create an LDIF statement.
The LDIF syntax for a Boolean bind rule is as follows:
bind_rule [boolean][bind_rule][boolean][bind_rule]...;)
For example, this bind rule is evaluated to be true if the bind DN is a member of either the
administrator's group or the Mail Administrator's group and if the client is running from
within the example.com domain:
(groupdn = "ldap:///cn=administrators,dc=example,dc=com" or
groupdn = "ldap:///cn=mail administrators,dc=example,dc=com" and
dns = "*.example.com";)
The trailing semicolon (;) is a required delimiter that must appear after the final bind rule.
Boolean expressions are evaluated in the following order:
• Innermost to outermost parenthetical expressions first.
• All expressions from left to right.
• NOT before AND or OR operators.
• OR and AND operators have no order of precedence.
Consider the following Boolean bind rules:
(bind_rule_A) OR (bind_rule_B)
(bind_rule_B) OR (bind_rule_A)
Because Boolean expressions are evaluated from left to right, in the first case, bind rule A is
evaluated before bind rule B, and, in the second case, bind rule B is evaluated before bind rule
A.
However, the Boolean NOT is evaluated before the Boolean OR and Boolean AND. Thus, in the
following example, bind rule B is evaluated before bind rule A despite the left-to-right rule.
(bind_rule_A) AND NOT (bind_rule_B)
6.4 Bind rules 255