Microsoft Internet Security and Acceleration Server 2000

FPCLATEntry Object

Each FPCLATEntry object represents a single entry in the Local Address Table (LAT) of the ISA array. The LAT contains all internal IP address ranges used by the internal network behind the ISA Server computer. ISA Server uses the LAT to determine how computers on the internal network communicate with each other and with external networks.

The LAT is maintained centrally at the ISA Server computer. Firewall clients automatically download and receive LAT updates at preset intervals. When a Firewall client requests an object, the client checks the LAT. If an IP address request is in the LAT, then the Firewall client requests the object directly. If the IP address request is not in the LAT, the client asks the ISA Server computer to request the object on its behalf.

Secure network address translation (SecureNAT) clients do not have a local copy of the LAT. Therefore, when a SecureNAT client requests an object, the request is sent through ISA Server. If the request is to an external IP address, then ISA Server makes the request on behalf of the client.

This object is a part of the FPCLAT collection, which represents the entire table.

Click here to see the ISA object hierarchy.

Note to C++ Programmers

This object implements the IFPCLATEntry interface.


The following table lists the methods of the FPCLATEntry object.

Method Description
SetIps Sets the IP address range of this LAT entry. Sets both the From (start of range) and the To (end of range).


The following table lists the properties of the FPCLATEntry object.

Property Description
Description Gets the description of the LAT entry.
IP_From Gets the lower IP address of the range.
IP_To Gets the higher IP address of the range.


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