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17.1 Overview
Use these screens to enable and configure the firewall that protects your EMG6765-Q10A and your LAN
from unwanted or malicious traffic.
Enable the firewall to protect your LAN computers from attacks by hackers on the Internet and control
access between the LAN and WAN. By default the firewall:
• allows traffic that originates from your LAN computers to go to all of the networks.
• blocks traffic that originates on the other networks from going to the LAN.
The following figure illustrates the default firewall action. User A can initiate an IM (Instant Messaging)
session from the LAN to the WAN (1). Return traffic for this session is also allowed (2). However other traffic
initiated from the WAN is blocked (3 and 4).
Figure 73 Default Firewall Action
17.1.1 What You Can Do
• Use the General screen to enable or disable the EMG6765-Q10A's firewall
• Use the Services screen enable service blocking, enter/delete/modify the services you want to block
and the date/time you want to block them
17.1.2 What You Need To Know
The following terms and concepts may help as you read through this chapter.
C
(Section 17.3 on page
EMG6765-Q10A User's Guide
127
H A P T E R
Firewall
(Section 17.2 on page
129).
17
129).
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