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LTE3316-M604 User’s Guide
109
CHAPTER 15
Firewall
15.1 Overview
Use these screens to enable and configure the firewall that protects your LTE 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 63 Default Firewall Action
15.1.1 What You Can Do
Use the General screen to enable or disable the LTE’s firewall (Section 15.2 on page 110).
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 (Section 15.3 on page 111).
15.1.2 What You Need To Know
The following terms and concepts may help as you read through this chapter.
LTE
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