P-2608HWL-Dx Series User’s Guide
Chapter 16 Firewall Configuration
203
The following table describes the labels in this screen.
16.6 Firewall Rules Summary
Note:
The ordering of your rules is very important as rules are applied in turn.
Click
Security > Firewall > Rules
to bring up the following screen. This screen displays a list
of the configured firewall rules. Note the order in which the rules are listed.
Table 72
Firewall: General
LABEL
DESCRIPTION
Active 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.
Bypass Triangle
Route
Select this check box to have the ZyXEL Device firewall permit the use of triangle
route topology on the network. See the appendix
for more on triangle route
topology.
Note:
Allowing asymmetrical routes may let traffic from the WAN go
directly to a LAN computer without passing through the
router. See
for more on triangle
route topology and how to deal with this problem.
Packet Direction
This is the direction of travel of packets (
LAN to LAN / Router
,
LAN to WAN
,
WAN to WAN / Router
,
WAN to LAN)
.
Firewall rules are grouped based on the direction of travel of packets to which they
apply. For example,
LAN to LAN / Router
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 the default action that the firewall is take on
packets that are traveling in the selected direction and do not match any of the
firewall rules.
Select
Drop
to silently discard the packets without sending a TCP reset packet or
an ICMP destination-unreachable message to the sender.
Select
Reject
to deny the packets and send a TCP reset packet (for a TCP packet)
or an ICMP destination-unreachable message (for a UDP packet) to the sender.
Select
Permit
to allow the passage of the packets.
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 your customized
rules.
Expand...
Click this button to display more information.
Basic...
Click this button to display less information.
Apply
Click
Apply
to save your changes back to the ZyXEL Device.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Содержание P-2608HWL-D1
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Страница 44: ...P 2608HWL Dx Series User s Guide 44 Chapter 1 Getting To Know the ZyXEL Device ...
Страница 66: ...P 2608HWL Dx Series User s Guide 66 Chapter 3 Internet and Wireless Setup Wizard ...
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Страница 206: ...P 2608HWL Dx Series User s Guide 206 Chapter 16 Firewall Configuration Figure 107 Firewall Edit Rule ...
Страница 220: ...P 2608HWL Dx Series User s Guide 220 Chapter 17 Content Filtering ...
Страница 257: ...P 2608HWL Dx Series User s Guide Chapter 19 Certificates 257 Figure 138 My Certificate Details ...
Страница 268: ...P 2608HWL Dx Series User s Guide 268 Chapter 19 Certificates Figure 146 Trusted Remote Host Details ...
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Страница 378: ...P 2608HWL Dx Series User s Guide 378 Appendix B Setting up Your Computer s IP Address ...
Страница 402: ...P 2608HWL Dx Series User s Guide 402 Appendix F Triangle Route ...
Страница 440: ...P 2608HWL Dx Series User s Guide 440 Appendix H Internal SPTGEN ...