174 Chapter 11 Firewall screensNN47922-500Once these questions have been answered, adding rules is simply a matter ofplugging the information into the correct fields in the WebGUI screens.Key fields for configuring rulesActionSet the action to either Block or Forward.ServiceSelect the service from the Service scrolling list box. If the service is not listed, itis necessary to first define it. For more information on predefined services, see“Predefined services” on page 188.Source addressWhat is the connection’s source address; is it on the LAN or WAN? Is it a singleIP, a range of IPs, or a subnet?Destination addressWhat is the connection’s destination address; is it on the LAN or WAN? Is it asingle IP, a range of IPs or a subnet?Connection direction examplesThis section describes examples for firewall rules for connections going fromLAN to WAN and from WAN to LAN.LAN to LAN/Business Secure Router rules apply to packets coming in throughthe LAN interface that are destined for either the Business Secure Router’s LANinterface itself or a different subnet on the LAN. A management session throughNote: Block means the firewall silently discards the packet.
