ZyXEL Communications G-2000 Plus - Manual (Page 198)

ZyAIR G-2000 Plus User’s Guide
197 Chapter 15 Firewall Screens
Figure 81 Default Rule
The following table describes the labels in this screen.
Table 60 Default Rule
LABEL DESCRIPTION
Enable Firewall Select this check box to activate the firewall. The ZyAIR performs access control and
protects against Denial of Service (DoS) attacks when the firewall is activated.
Allow
Asymmetrical
Route
Select this check box to have the ZyAIR firewall permit the use of triangle route
topology on the network. See the Appendix for more on triangle route topology.
Packet Direction This is the direction of travel of packets ((W)LAN to (W)LAN/ZyAIR, (W)LAN to
WAN, WAN to (W)LAN, WAN to WAN/ZyAIR).
Firewall rules are grouped based on the direction of travel of packets to which they
apply. For example, (W)LAN to (W)LAN/ZyAIR means packets traveling from a
computer/subnet on the LAN to either another computer/subnet on the LAN interface
of the ZyAIR or the ZyAIR itself.
Default Action Use the drop-down list boxes to select whether to Block (silently discard) or
Forward (allow the passage of) packets that are traveling in the selected direction.
Log Select the check box to create a log (when the above action is taken) for packets
that are traveling in the selected direction and do not match any of the rules below.
Apply Click Apply to save your changes back to the ZyAIR.
Reset Click Reset to begin configuring this screen afresh.
15.6.1 Rule Summary
Note: The ordering of your rules is very important as rules are
applied in turn.
Click FIREWALL, then the Rule Summary tab to open the screen.