Billion 7300vgp Manual De Usuario

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4.3.4 Firewall 
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. In addition to 
this, when using NAT (Network Address Translation) the router acts as a “natural” Internet   
firewall, since all PCs on your LAN use private IP addresses that cannot be directly 
accessed from the Internet. See the WAN configuration section for more details on NAT.   
 
 
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 are 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 the NAT function is enabled. 
Firewall Security and Policy (General Settings): Inbound direction of Packet Filter rules 
prevent unauthorized computers or applications accessing your local network from the 
Internet. 
Intrusion Detection: Enable Intrusion Detection to detect, prevent, and log malicious 
attacks. 
MAC Filter rules: Prevents unauthorized computers
 
accessing the Internet. 
 
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