Figure 10-3 Default Rule (Router Mode); Table 10-1 Default Rule (Router Mode) - ZyXEL Communications ZyWALL 5 User Manual

The following table describes the labels in this screen.
LABEL
Enable Firewall Select this check box to activate the firewall. The ZyWALL performs access control and
protects against Denial of Service (DoS) attacks when the firewall is activated.
Allow Select this check box to have the ZyWALL firewall permit the use of triangle route topology
Asymmetrical on the network. See the appendix for more on triangle route topology.
Route
Packet Direction This is the direction of travel of packets (LAN to LAN/ZyWALL, LAN to WAN, LAN to
DMZ, WAN to LAN, WAN to WAN/ZyWALL, WAN to DMZ, DMZ to LAN, DMZ to WAN
or DMZ to DMZ/ZyWALL).
Firewall rules are grouped based on the direction of travel of packets to which they apply.
For example, LAN to LAN/ZyWALL means packets traveling from a computer/subnet on
the LAN to either another computer/subnet on the LAN interface of the ZyWALL or the
ZyWALL 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 ZyWALL.
Cancel Click Cancel to begin configuring this screen afresh.
Firewall Screens

Figure 10-3 Default Rule (Router Mode)

Table 10-1 Default Rule (Router Mode)

ZyWALL 5 Internet Security Appliance
DESCRIPTION
10-5