FW_H_RPCFilter
To configure RPC filtering
In the console tree of ISA Server Management, click Firewall Policy.
In the details pane, click any access rule that applies to remote procedure call (RPC) traffic.
On the Tasks tab, click Edit Selected Rule.
On the Protocols tab (for an access rule), click Filtering, and then click Configure RPC protocol.
On the Protocol tab, select Enforce strict RPC compliance, if no RPC protocols should be allowed.
Note
To open ISA Server Management, click Start, point to All Programs, point to Microsoft ISA Server, and then click ISA Server Management.
For ISA Server 2006 Enterprise Edition, expand Microsoft Internet Security and Acceleration Server 2006, expand Arrays, expand Array_Name, and then click Firewall Policy.
For ISA Server 2006 Standard Edition, expand Microsoft Internet Security and Acceleration Server 2006, expand Server_Name, and then click Firewall Policy.
Important
When you publish an RPC interface where there is a route network relationship between networks, port overriding is ignored. The publishing rule will use the original IP address or port.
When you disable the Enforce strict RPC compliance option, DCOM traffic and other RPC protocols will be allowed.
After you click Apply in the details pane, the policy is updated. The new policy applies only to new connections.