ZyXEL Communications G-2000 Plus V2, Руководство пользователя

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ZyXEL G-2000 Plus v2 User’s Guide
150 Chapter 11 Firewall Screens
Figure 57 Default Rule
The following table describes the labels in this screen.
11.6.1 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.
Table 49 Default Rule
LABEL DESCRIPTION
Enable Firewall Select this check box to activate the firewall. The
ZyXEL device
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
ZyXEL device
firewall permit the use of triangle
route topology on the network. For more information on triangle route topology see
Appendix M .
Packet Direction This is the direction of travel of packets ( (W)LAN to (W)LAN/
ZyXEL device
,
(W)LAN to WAN , WAN to (W)LAN , WAN to WAN/
ZyXEL device
).
Firewall rules are grouped based on the direction of travel of packets to which they
apply. For example, (W)LAN to (W)LAN/
ZyXEL device
means packets traveling
from a computer/subnet on the LAN to either another computer/subnet on the LAN
interface of the
ZyXEL device
or the
ZyXEL device
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
ZyXEL device
.
Reset Click Reset to begin configuring this screen afresh.