BEC 7404 Series User Manual

Contents

Chapter 4: Configuration 59When using Virtual Servers your PCs will be exposed to the degreespecified in your Virtual Server settings provided the ports specified areopened in your firewall packet filter settings.Firewall and Access ControlYour router includes a full SPI (Stateful Packet Inspection) firewall for controlling Internet access fromyour LAN, as well as helping to prevent attacks from hackers. In addition to this, when using NAT(Network Address Translation. Please see the WAN configuration section for more details on NAT) therouter acts as a “natural” Internet firewall, as all PCs on your LAN will use private IP addresses thatcannot be directly accessed from the Internet.Firewall: Prevents access from outside your network. The router provides three levels of securitysupport:NAT natural firewall: This masks LAN users’ IP addresses which are invisible to outside users on theInternet, making it much more difficult for a hacker to target a machine on your network. This naturalfirewall is on when NAT function is enabled.Firewall Security and Policy (General Settings): Inbound direction of Packet Filter rules to preventunauthorized computers or applications accessing your local network from the Internet.Intrusion Detection: Enable Intrusion Detection to detect, prevent and log malicious attacks.Access Control: Prevents access from PCs on your local network:Firewall Security and Policy (General Settings): Outbound direction of Packet Filter rules to preventunauthorized computers or applications accessing the Internet.URL Filter: To block PCs on your local network from unwanted websites.You can find six items under the Firewall section: General Settings, Packet Filter, IntrusionDetection, URL Filter and Firewall Log.