LTE7410 User’s Guide
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CHAPTER 10
Firewall
10.1 Overview
This chapter shows you how to enable the LTE Device firewall. Use the firewall to protect your LTE
Device and network from attacks by hackers on the Internet and control access to it. The firewall:
• allows traffic that originates from your LAN computers to go to all other networks.
• blocks traffic that originates on other networks from going to the LAN.
• blocks SYN and port scanner attacks.
By default, the LTE Device blocks DDOS, LAND and Ping of Death attacks whether the firewall is
enabled or disabled.
The following figure illustrates the 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 48 Default Firewall Action
10.1.1 What You Can Do in the Firewall Screens
•Use the General screen (Section 10.2 on page 68) to select the firewall protection level on the
LTE Device.
•Use the Default Action screen (Section 10.3 on page 69) to set the default action that the
firewall takes on packets that do not match any of the firewall rules.
•Use the Rules screen (Section 10.4 on page 70) to view the configured firewall rules and add,
edit or remove a firewall rule.
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