Microsoft Internet Security and Acceleration Server 2000

FPCLDT Collection

The FPCLDT collection provides access to all the FPCLDTEntry objects of an ISA Server computer. Through this collection you can add, delete, and modify individual entries of the Local Domain Table (LDT).

Each entry in the table is stored as an individual FPCLDTEntry object.

An LDT lists all the servers in the internal network behind the ISA server. When a client requests an object from a computer and requires name resolution, the client checks the LDT. If the domain name does not appear in the LDT, then the client requests that ISA Server resolve the domain name on its behalf.

After the name resolution server returns the Internet protocol (IP) address of the destination server, the LAT is used to determine whether to go directly to that address or through ISA Server.

Clients use the LDT to determine if a name resolution request should be performed directly or by way of ISA Server. Firewall clients maintain a copy of the LDT, which is updated regularly, on their computer. When a Firewall client attempts to resolve a name, it checks the LDT. If the name is in the LDT, then the Firewall client resolves the name directly. Otherwise, it requests that ISA Server resolve the name by passing the request to a DNS server on the Internet.

The FPCLDT collection is a property of the FPCNetworkConfiguration object.

Click here to see the ISA object hierarchy.

Note to C++ Programmers

This collection implements the IFPCLDT interface.


The following table lists the methods of the FPCLDT collection.

Method Description
Add Creates a new LDTEntry object in the list and returns a reference to it.
Item Retrieves the given LDTEntry object from the collection.
Refresh Reads the collection's configuration information from persistent storage, discarding any changes to the configuration that were not saved.
Remove Removes an LDTEntry object from the collection.
Save Saves the collection's configuration to persistent storage.


The following table lists the properties of the FPCLDT collection.

Property Description
Count Gets the number of LDTEntry objects in the collection.
VendorParametersSets Gets a reference to an object for storing and loading of custom data in the LDT collection's storage.


  Windows NT/2000: Requires Windows 2000.
  Version: Requires ISA Server 2000.
  Header: Msfpccom.idl.