Dynamic port filtering (DPF) enables you to configure the MCP networking devices to prevent unwanted TCP and UDP traffic from reaching the MCP host. This configuration can help prevent a Denial of Service attack on the MCP host by ensuring that port scans do not cause excess overhead.

To discard (filter) unwanted traffic, the MCP tells the networking devices which ports are accepting connections and data. The list of port numbers includes those associated with registered DSSs. All other data is discarded and summary reports about what has been discarded are periodically written in the system sumlog.