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3.4.2
Firewall
The Firewall function helps protect your local network against attack from outside. It also
provides a way of restricting users on the local network from accessing the Internet.
Additionally, it can filter out specific packets to trigger the router to place an outgoing
connection.
3.4.2.1 Firewall Configuration
The WE-1120 provides built-in firewall functions, enabling you to protect the system against
denial of service (DoS) attacks and other types of malicious accesses to your LAN while
providing Internet access sharing at the same time. You can also specify how to monitor
attempted attacks, and who should be automatically notified.
1. Firewall Protection Level: Select the level from the drop-down list, including High,
Medium and Low. The below screen including SPI service and ICMP setting will
change according to your level setup.
2. Enable SPI Service: The WE-1120 often monitor a wider range of activity, such as
patterns of traffic and the type of application sending traffic. With SPI, the router looks
at individual packets for patterns similar to known hacker techniques, such as Denial of
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