Billion Electric Company 400G - Manual (Page 49)

Billion 400G Router
Chapter 4: Configuration
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When using Virtual Servers your PCs will be exposed to the degree specified in
your Virtual Server settings provided the ports specified are opened in your firewall
packet filter settings.
Firewall and Access Control
Your router includes a full SPI (Stateful Packet Inspection) firewall for controlling Internet access from your LAN, as
well as helping to prevent attacks from hackers. Besides, when using NAT, the router acts as a “natural” Internet
firewall, as all PCs on your LAN will use private IP addresses that cannot be directly accessed from the Internet.
Firewall: Prevents access from outside your network. The router provides three levels of security support:
NAT natural firewall: This masks LAN users’ IP addresses which is invisible to outside users on the Internet,
making it much more difficult for a hacker to target a machine on your network. This natural firewall is on when NAT
function is enabled.
Firewall Security and Policy (General Settings): Inbound direction of Packet Filter rules to prevent unauthorized
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 prevent unauthorized
computers or applications accessing the Internet.
URL Filter: To block PCs on your local network from unwanted websites.
Here are the items within the Firewall section: General Settings, Packet Filter, Intrusion Detection, URL Filter,
IM/P2P Blocking and Firewall Log.