Using a Naming Service in Trusted Extensions

To achieve uniformity of user, host, and network attributes within a security domain with multiple Trusted Extensions systems, a naming service is used for distributing most configuration information. LDAP is an example of a naming service. The nsswitch.conf file determines which naming service is used. LDAP is the recommended naming service for Trusted Extensions.

The Directory Server can provide the LDAP naming service for Trusted Extensions and Solaris clients. The server must include Trusted Extensions network databases, and the Trusted Extensions clients must connect to the server over a multilevel port. The security administrator specifies the multilevel port when configuring Trusted Extensions.

Trusted Extensions adds two trusted network databases to the LDAP server: tnrhdb and tnrhtp. These databases are administered by using the Security Templates tool in the Solaris Management Console. A toolbox of Scope=LDAP, Policy=TSOL stores configuration changes on the Directory Server.

• For information about the use of the LDAP naming service in the Solaris OS, see System Administration Guide: Naming and Directory Services (DNS, NIS, and LDAP).

• Setting up the Directory Server for Trusted Extensions clients is described in Chapter 5, Configuring LDAP for Trusted Extensions (Tasks). Trusted Extensions systems can be clients of a Solaris LDAP server by using an LDAP proxy server that is configured with Trusted Extensions.

Note - Systems that are configured with Trusted Extensions cannot be clients of NIS or NIS+ masters.

Non-Networked Trusted Extensions Systems

If a naming service is not used at a site, administrators must ensure that configuration information for users, hosts, and networks is identical on all hosts. A change that is made on one host must be made on all hosts.

On a non-networked Trusted Extensions system, configuration information is maintained in the /etc, /etc/security, and /etc/security/tsol directories. Actions in the Trusted_Extensions folder enable you to modify some configuration information. The Security Templates tool in the Solaris Management Console enables you to modify network database parameters. Users, roles, and rights are modified in the User Accounts, Administrative Roles, and Rights tools. A toolbox on This Computer with Scope=Files, Policy=TSOL stores configuration changes locally.

Trusted Extensions LDAP Databases

Trusted Extensions extends the Directory Server's schema to accommodate the tnrhdb and tnrhtp databases. Trusted Extensions defines two new attributes, ipTnetNumber and ipTnetTemplateName, and two new object classes, ipTnetTemplate and ipTnetHost.

The attribute definitions are as follows:

ipTnetNumber
   ( 1.3.6.1.1.1.1.34 NAME 'ipTnetNumber'
     DESC 'Trusted network host or subnet address'
     EQUALITY caseExactIA5Match
     SYNTAX 1.3.6.1.4.1.1466.115.121.1.26
     SINGLE-VALUE )

ipTnetTemplateName
   ( 1.3.6.1.1.1.1.35 NAME 'ipTnetTemplateName'
     DESC 'Trusted network template name'
     EQUALITY caseExactIA5Match
     SYNTAX 1.3.6.1.4.1.1466.115.121.1.26
     SINGLE-VALUE )

The object class definitions are as follows:

ipTnetTemplate
   ( 1.3.6.1.1.1.2.18 NAME 'ipTnetTemplate' SUP top STRUCTURAL
     DESC 'Object class for Trusted network host templates'
     MUST ( ipTnetTemplateName )
     MAY ( SolarisAttrKeyValue ) )

ipTnetHost
   ( 1.3.6.1.1.1.2.19 NAME 'ipTnetHost' SUP top AUXILIARY
     DESC 'Object class for Trusted network host/subnet address
           to template mapping'
     MUST ( ipTnetNumber $ ipTnetTemplateName ) )

The cipso template definition in LDAP is similar to the following:

ou=ipTnet,dc=example,dc=example1,dc=exampleco,dc=com
 objectClass=top
 objectClass=organizationalUnit
 ou=ipTnet

 ipTnetTemplateName=cipso,ou=ipTnet,dc=example,dc=example1,dc=exampleco,dc=com
 objectClass=top
 objectClass=ipTnetTemplate
 ipTnetTemplateName=cipso
 SolarisAttrKeyValue=host_type=cipso;doi=1;min_sl=ADMIN_LOW;max_sl=ADMIN_HIGH;

 ipTnetNumber=0.0.0.0,ou=ipTnet,dc=example,dc=example1,dc=exampleco,dc=com
 objectClass=top
 objectClass=ipTnetTemplate
 objectClass=ipTnetHost
 ipTnetNumber=0.0.0.0
 ipTnetTemplateName=internal