ZyXEL N300 User Manual download pdf (Page 123)

EMG1302-R10A User’s Guide 123

CHAPTER 16

Security

16.1 Overview

Use these screens to enable and configure the firewall that protects your EMG1302-R10A 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 71 Default Firewall Action

16.2 What You Can Do

•Use the General screen to enable or disable the EMG1302-R10A’s firewall (Section 16.4 on page

125).

•Use the Services screen to configure the EMG1302-R10A’s ICMP settings (Section 16.5 on page

126).

WAN

LAN

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ZyXEL N300 User Manual Page 123