The figure shows a to-and-from progression from "Client" through "Firewall" to a box labeled "Application Server." In the box are three smaller boxes: "Web Services," "ArcIMS Tasker Monitor," and "ESRI Shapefiles." The arrows from the firewall go to the Web Services box then either to the other two smaller boxes or through a "Firewall" to a box labeled "Data Server" with a box within it labeled "SQL Stored Procedures."