Longshine LCS-IR2114-D - Manual (Page 40)

IP Sharing Router
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3.5 Firewall
Originally, the term firewall referred to a construction technique designed to prevent the spread of fire
from one room to another. The network term ”firewall” is a system or group of systems that enforces an
access-control policy between two networks. It may also be defined as a mechanism used to protect a
trusted network from an untrusted network. Of course, firewalls cannot solve every security problem. A
firewall is one of the mechanisms used to establish a network security perimeter in support of a network
security policy. It should never be the only mechanism or method employed. For a firewall to guard
effectively, you must design and deploy it appropriately. This requires integrating the firewall into a broad
information-security policy. In addition, specific policies must be implemented within the firewall itself.
Choose menu “Firewall”, you can see the submenus under the main menu: Firewall Option, Client
Filtering, URL Filtering, and MAC Filtering.
Click any of them. And you will be able to configure the corresponding function. The detailed explanations
for each submenu are provided below.
3.5.1 Firewall Options
Firewall: Prevent Network Attack. It can protect your network to prevent hackers attack. In this page, you
can configure the functions below to protect the router from being attacked.