Chapter 24 Firewall
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• The ZyWALL drops most packets from the DMZ zone to the ZyWALL itself,
except for DNS and NetBIOS traffic, and generates a log.
When you configure a firewall rule for packets destined for the ZyWALL itself,
make sure it does not conflict with your service control rule. See
for more information about service control (remote management). The
ZyWALL checks the firewall rules before the service control rules for traffic
destined for the ZyWALL.
You can configure a To-ZyWALL firewall rule (with
From Any To ZyWALL
direction) for traffic from an interface which is not in a zone.
Global Firewall Rules
Firewall rules with
from any
and/or
to any
as the packet direction are called
global firewall rules. The global firewall rules are the only firewall rules that apply
to an interface or VPN tunnel that is not included in a zone. The
from any
rules
apply to traffic coming from the interface and the
to any
rules apply to traffic
going to the interface.
Firewall Rule Criteria
The ZyWALL checks the schedule, user name (user’s login name on the ZyWALL),
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 ZyWALL takes the action specified in the rule.
User Specific Firewall Rules
You can specify users or user groups in firewall rules. For example, to allow a
specific user from any computer to access a zone by logging in to the ZyWALL, you
can set up a rule based on the user name only. If you also apply a schedule to the
firewall rule, the user can only access the network at the scheduled time. A user-
aware firewall rule is activated whenever the user logs in to the ZyWALL and will
be disabled after the user logs out of the ZyWALL.
Firewall and Application Patrol
To use a service, make sure both the firewall and application patrol allow the
service’s packets to go through the ZyWALL. The ZyWALL checks the firewall rules
before the application patrol rules for traffic going through the ZyWALL.
Firewall and VPN Traffic
After you create a VPN tunnel and add it to a zone, you can set the firewall rules
applied to VPN traffic. If you add a VPN tunnel to an existing zone (the LAN zone
for example), you can configure a new LAN to LAN firewall rule or use intra-zone
Summary of Contents for ZyWALL 1050
Page 2: ......
Page 30: ...Table of Contents ZyWALL USG 1000 User s Guide 30 ...
Page 31: ...31 PART I User s Guide ...
Page 32: ...32 ...
Page 38: ...Chapter 1 Introducing the ZyWALL ZyWALL USG 1000 User s Guide 38 ...
Page 46: ...Chapter 2 Features and Applications ZyWALL USG 1000 User s Guide 46 ...
Page 64: ...Chapter 3 Web Configurator ZyWALL USG 1000 User s Guide 64 ...
Page 74: ...Chapter 4 Installation Setup Wizard ZyWALL USG 1000 User s Guide 74 ...
Page 116: ...Chapter 6 Configuration Basics ZyWALL USG 1000 User s Guide 116 ...
Page 168: ...Chapter 7 Tutorials ZyWALL USG 1000 User s Guide 168 ...
Page 205: ...Chapter 8 L2TP VPN Example ZyWALL USG 1000 User s Guide 205 ...
Page 206: ...Chapter 8 L2TP VPN Example ZyWALL USG 1000 User s Guide 206 ...
Page 207: ...207 PART II Technical Reference ...
Page 208: ...208 ...
Page 222: ...Chapter 9 Dashboard ZyWALL USG 1000 User s Guide 222 ...
Page 264: ...Chapter 10 Monitor ZyWALL USG 1000 User s Guide 264 ...
Page 336: ...Chapter 13 Interfaces ZyWALL USG 1000 User s Guide 336 ...
Page 346: ...Chapter 14 Trunks ZyWALL USG 1000 User s Guide 346 ...
Page 362: ...Chapter 15 Policy and Static Routes ZyWALL USG 1000 User s Guide 362 ...
Page 376: ...Chapter 16 Routing Protocols ZyWALL USG 1000 User s Guide 376 ...
Page 396: ...Chapter 19 NAT ZyWALL USG 1000 User s Guide 396 ...
Page 401: ...Chapter 20 HTTP Redirect ZyWALL USG 1000 User s Guide 401 ...
Page 402: ...Chapter 20 HTTP Redirect ZyWALL USG 1000 User s Guide 402 ...
Page 424: ...Chapter 23 Authentication Policy ZyWALL USG 1000 User s Guide 424 ...
Page 442: ...Chapter 24 Firewall ZyWALL USG 1000 User s Guide 442 ...
Page 483: ...Chapter 25 IPSec VPN ZyWALL USG 1000 User s Guide 483 ...
Page 484: ...Chapter 25 IPSec VPN ZyWALL USG 1000 User s Guide 484 ...
Page 497: ...Chapter 26 SSL VPN ZyWALL USG 1000 User s Guide 497 ...
Page 498: ...Chapter 26 SSL VPN ZyWALL USG 1000 User s Guide 498 ...
Page 508: ...Chapter 27 SSL User Screens ZyWALL USG 1000 User s Guide 508 ...
Page 510: ...Chapter 28 SSL User Application Screens ZyWALL USG 1000 User s Guide 510 ...
Page 518: ...Chapter 29 SSL User File Sharing ZyWALL USG 1000 User s Guide 518 ...
Page 603: ...Chapter 34 IDP ZyWALL USG 1000 User s Guide 603 ...
Page 604: ...Chapter 34 IDP ZyWALL USG 1000 User s Guide 604 ...
Page 614: ...Chapter 35 ADP ZyWALL USG 1000 User s Guide 614 Figure 416 Profiles Protocol Anomaly ...
Page 625: ...Chapter 35 ADP ZyWALL USG 1000 User s Guide 625 ...
Page 626: ...Chapter 35 ADP ZyWALL USG 1000 User s Guide 626 ...
Page 658: ...Chapter 37 Content Filter Reports ZyWALL USG 1000 User s Guide 658 ...
Page 676: ...Chapter 38 Anti Spam ZyWALL USG 1000 User s Guide 676 ...
Page 698: ...Chapter 39 Device HA ZyWALL USG 1000 User s Guide 698 ...
Page 714: ...Chapter 40 User Group ZyWALL USG 1000 User s Guide 714 ...
Page 720: ...Chapter 41 Addresses ZyWALL USG 1000 User s Guide 720 ...
Page 732: ...Chapter 43 Schedules ZyWALL USG 1000 User s Guide 732 ...
Page 748: ...Chapter 45 Authentication Method ZyWALL USG 1000 User s Guide 748 ...
Page 770: ...Chapter 46 Certificates ZyWALL USG 1000 User s Guide 770 ...
Page 782: ...Chapter 48 SSL Application ZyWALL USG 1000 User s Guide 782 ...
Page 792: ...Chapter 49 Endpoint Security ZyWALL USG 1000 User s Guide 792 ...
Page 844: ...Chapter 50 System ZyWALL USG 1000 User s Guide 844 ...
Page 861: ...Chapter 51 Log and Report ZyWALL USG 1000 User s Guide 861 ...
Page 862: ...Chapter 51 Log and Report ZyWALL USG 1000 User s Guide 862 ...
Page 886: ...Chapter 54 Reboot ZyWALL USG 1000 User s Guide 886 ...
Page 888: ...Chapter 55 Shutdown ZyWALL USG 1000 User s Guide 888 ...
Page 908: ...Chapter 56 Troubleshooting ZyWALL USG 1000 User s Guide 908 ...
Page 916: ...Chapter 57 Product Specifications ZyWALL USG 1000 User s Guide 916 ...
Page 1070: ...Appendix E Open Software Announcements ZyWALL USG 1000 User s Guide 1070 ...