Chapter 19 Firewall
AX/DX/EX/PX Series User’s Guide
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Figure 207 Security > Firewall > DoS
The following table describes the labels in this screen.
19.7 Firewall Technical Reference
This section provides some technical background information about the topics covered in this chapter.
19.7.1 Firewall Rules Overview
Your customized rules take precedence and override the Zyxel Device’s default settings. The Zyxel
Device checks the source IP address, destination IP address and IP protocol type of network traffic
against the firewall rules (in the order you list them). When the traffic matches a rule, the Zyxel Device
takes the action specified in the rule.
Firewall rules are grouped based on the direction of travel of packets to which they apply:
By default, the Zyxel Device’s stateful packet inspection allows packets traveling in the following
directions:
• LAN to Router
These rules specify which computers on the LAN can manage the Zyxel Device (remote
management).
Note: You can also configure the remote management settings to allow only a specific
computer to manage the Zyxel Device.
Table 129 Security > Firewall > DoS
LABEL DESCRIPTION
DoS Protection
Blocking
Enable this to protect against DoS attacks. The Zyxel Device will drop sessions that surpass
maximum thresholds.
Apply Click this to save your changes.
Cancel Click this to restore your previously saved settings.
• LAN to Router • WAN to LAN
• LAN to WAN • WAN to Router
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