Some additional ESM modules are available in the 
               		Enterprise Server product or as separate downloads. Here are some brief notes regarding these modules and hardening: 
               	 
            
 
            	 
             
               		 
               		  
               - eTrust ESM Module 
                  		  
               
- This module uses the CA eTrust product to make security decisions. For hardening, ensure all the 
                  			 Enterprise Server resource classes are defined in eTrust, then remove any 
                  			 DefaultAllow settings in the Security Manager configuration text. 
                  		  
               
- Map ESM Module 
                  		  
               
- The Map ESM Module is a special-purpose module which only performs name mapping, using a side file. If this module is used,
                  set the permissions for the side file to restrict write access to system administrators. 
                  		  
               
- Null ESM Module 
                  		  
               
- The Null ESM Module normally allows all security requests, but can be configured to return different results for specific
                  requests. Typically it is used for testing. There are no specific hardening recommendations, other than to note that since
                  the Null ESM Module is configured using the Security Manager 
                  			 Configuration Information field, its security is limited by how access to 
                  			 Enterprise Server administration is restricted. 
                  		  
               
- TSS ESM Module 
                  		  
               
- This is a variant of the MLDAP ESM Module used with the CA Top Secret mainframe security product's LDAP server. This module
                  has not been updated in some time, and further deployment of it is not recommended at this time.