Videotron EMG2926-Q10A, Руководство пользователя

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EMG2926-Q10A User’s Guide
117
C
HAPTER
15
Firewall
15.1 Overview
Use these screens to enable and configure the firewall that protects your EMG2926-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 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 83
Default Firewall Action
15.2 General Screen
Use this screen to enable or disable the EMG2926-Q10A’s firewall and set up firewall logs. Click
Security > Firewall to open the General screen.
WAN
LAN
3
4
1
2
A