HP-UX Directory Server 8.1 administrator guide

This ACI grants managers all rights on the entries of employees that report to them. However,
because access rights are evaluated on the entry being created, this type of ACI would also allow
any employee to create an entry in which the manager attribute is set to their own DN. For
example, disgruntled employee Joe (cn=Joe,ou=eng,dc=example,dc=com) might want to
create an entry in the Human Resources branch of the tree to use (or misuse) the privileges
granted to Human Resources employees.
He could do this by creating the following entry:
dn: cn= Trojan Horse,ou=Human Resources,dc=example,dc=com
objectclass: top
...
cn: Trojan Horse
manager: cn=Joe,ou=eng,dc=example,dc=com
To avoid this type of security threat, the ACI evaluation process does not grant add permission
at level 0, to the entry itself. You can, however, use the parent keyword to grant add rights
below existing entries. You must specify the number of levels below the parent for add rights.
For example, the following ACI allows child entries to be added to any entry in the
dc=example,dc=com that has a manager attribute that matches the bind DN:
aci: (target="ldap:///dc=example,dc=com")(targetattr=*)
(version 3.0; acl "parent-access"; allow (add)
userattr = "parent[0,1].manager#USERDN";)
This ACI ensures that add permission is granted only to users whose bind DN matches the
manager attribute of the parent entry.
6.4.6 Defining access from a specific IP address
NOTE:
Directory Server supports both IPv4 and IPv6 IP addresses.
Using bind rules, you can indicate that the bind operation must originate from a specific IP
address. This is often used to force all directory updates to occur from a given machine or network
domain.
The LDIF syntax for setting a bind rule based on an IP address is as follows:
ip = "IP_address" or ip != "IP_address"
The IP address must be expressed in dot notation. You can use the wildcard character (*) to
include multiple machines. For example, the following string is valid:
ip = "12.123.1.*";
The bind rule is evaluated to be true if the client accessing the directory is located at the named
IP address. This can be useful for allowing certain kinds of directory access only from a specific
subnet or machine.
For example, use a wildcard IP address such as 12.3.45.* to specify a specific subnetwork or
123.45.6.*+255.255.255.115 to specify a subnetwork mask.
From the Directory Server Console, you can define specific machines to which the ACI applies
through the Access Control Editor. For more information, see “Creating ACIs from the console”.
6.4.7 Defining access from a specific domain
A bind rule can specify that the bind operation must originate from a particular domain or host
machine. This is often used to force all directory updates to occur from a given machine or
network domain.
The LDIF syntax for setting a bind rule based on the DNS host name is as follows:
252 Managing access control