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Chapter 24 Firewall
ZyWALL USG 100/200 Series User’s Guide
464
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 LAN1 zone
for example), you can configure a new LAN1 to LAN1 firewall rule or use intra-
zone traffic blocking to allow or block VPN traffic transmitting between the VPN
tunnel and other interfaces in the LAN zone. If you add the VPN tunnel to a new
zone (the VPN zone for example), you can configure rules for VPN traffic between
the VPN zone and other zones or
From VPN To-ZyWALL
rules for VPN traffic
destined for the ZyWALL.
Session Limits
Accessing the ZyWALL or network resources through the ZyWALL requires a NAT
session and corresponding firewall session. Peer to peer applications, such as file
sharing applications, may use a large number of NAT sessions. A single client
could use all of the available NAT sessions and prevent others from connecting to
or through the ZyWALL. The ZyWALL lets you limit the number of concurrent NAT/
firewall sessions a client can use.
Finding Out More
• See
for related information on the
Firewall
screens.
• See
for an example of creating firewall rules as part
of configuring user-aware access control (
• See
for an example of creating a firewall rule to
allow H.323 traffic from the WAN to the LAN.
• See
for an example of creating a firewall rule to
allow web traffic from the WAN to a server on the DMZ.
• See
for an example of creating firewall rules to
allow SIP traffic for an IPPBX or SIP server on the DMZ.
24.1.3 Firewall Rule Example Applications
Suppose that your company decides to block all of the LAN users from using IRC
(Internet Relay Chat) through the Internet. To do this, you would configure a LAN
to WAN firewall rule that blocks IRC traffic from any source IP address from going
to any destination address. You do not need to specify a schedule since you need
Содержание ZyWALL USG 100 Series
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Страница 30: ...Table of Contents ZyWALL USG 100 200 Series User s Guide 30 ...
Страница 31: ...31 PART I User s Guide ...
Страница 32: ...32 ...
Страница 46: ...Chapter 2 Features and Applications ZyWALL USG 100 200 Series User s Guide 46 ...
Страница 64: ...Chapter 3 Web Configurator ZyWALL USG 100 200 Series User s Guide 64 ...
Страница 130: ...Chapter 7 Tutorials ZyWALL USG 100 200 Series User s Guide 130 Figure 74 Configuration Network Interface WLAN Add ...
Страница 186: ...Chapter 7 Tutorials ZyWALL USG 100 200 Series User s Guide 186 ...
Страница 223: ...Chapter 8 L2TP VPN Example ZyWALL USG 100 200 Series User s Guide 223 ...
Страница 224: ...Chapter 8 L2TP VPN Example ZyWALL USG 100 200 Series User s Guide 224 ...
Страница 225: ...225 PART II Technical Reference ...
Страница 226: ...226 ...
Страница 240: ...Chapter 9 Dashboard ZyWALL USG 100 200 Series User s Guide 240 ...
Страница 284: ...Chapter 10 Monitor ZyWALL USG 100 200 Series User s Guide 284 ...
Страница 348: ...Chapter 13 Interfaces ZyWALL USG 100 200 Series User s Guide 348 Figure 287 Configuration Network Interface VLAN Edit ...
Страница 358: ...Chapter 13 Interfaces ZyWALL USG 100 200 Series User s Guide 358 Figure 289 Configuration Network Interface Bridge Add ...
Страница 372: ...Chapter 13 Interfaces ZyWALL USG 100 200 Series User s Guide 372 ...
Страница 382: ...Chapter 14 Trunks ZyWALL USG 100 200 Series User s Guide 382 ...
Страница 398: ...Chapter 15 Policy and Static Routes ZyWALL USG 100 200 Series User s Guide 398 ...
Страница 412: ...Chapter 16 Routing Protocols ZyWALL USG 100 200 Series User s Guide 412 ...
Страница 432: ...Chapter 19 NAT ZyWALL USG 100 200 Series User s Guide 432 ...
Страница 437: ...Chapter 20 HTTP Redirect ZyWALL USG 100 200 Series User s Guide 437 ...
Страница 438: ...Chapter 20 HTTP Redirect ZyWALL USG 100 200 Series User s Guide 438 ...
Страница 460: ...Chapter 23 Authentication Policy ZyWALL USG 100 200 Series User s Guide 460 ...
Страница 478: ...Chapter 24 Firewall ZyWALL USG 100 200 Series User s Guide 478 ...
Страница 496: ...Chapter 25 IPSec VPN ZyWALL USG 100 200 Series User s Guide 496 Figure 359 Configuration VPN IPSec VPN VPN Gateway Edit ...
Страница 519: ...Chapter 25 IPSec VPN ZyWALL USG 100 200 Series User s Guide 519 ...
Страница 520: ...Chapter 25 IPSec VPN ZyWALL USG 100 200 Series User s Guide 520 ...
Страница 527: ...Chapter 26 SSL VPN ZyWALL USG 100 200 Series User s Guide 527 Figure 373 VPN SSL VPN Access Privilege Add Edit ...
Страница 534: ...Chapter 26 SSL VPN ZyWALL USG 100 200 Series User s Guide 534 ...
Страница 544: ...Chapter 27 SSL User Screens ZyWALL USG 100 200 Series User s Guide 544 ...
Страница 546: ...Chapter 28 SSL User Application Screens ZyWALL USG 100 200 Series User s Guide 546 ...
Страница 554: ...Chapter 29 SSL User File Sharing ZyWALL USG 100 200 Series User s Guide 554 ...
Страница 639: ...Chapter 34 IDP ZyWALL USG 100 200 Series User s Guide 639 ...
Страница 640: ...Chapter 34 IDP ZyWALL USG 100 200 Series User s Guide 640 ...
Страница 650: ...Chapter 35 ADP ZyWALL USG 100 200 Series User s Guide 650 Figure 449 Profiles Protocol Anomaly ...
Страница 661: ...Chapter 35 ADP ZyWALL USG 100 200 Series User s Guide 661 ...
Страница 662: ...Chapter 35 ADP ZyWALL USG 100 200 Series User s Guide 662 ...
Страница 694: ...Chapter 37 Content Filter Reports ZyWALL USG 100 200 Series User s Guide 694 ...
Страница 712: ...Chapter 38 Anti Spam ZyWALL USG 100 200 Series User s Guide 712 ...
Страница 734: ...Chapter 39 Device HA ZyWALL USG 100 200 Series User s Guide 734 ...
Страница 750: ...Chapter 40 User Group ZyWALL USG 100 200 Series User s Guide 750 ...
Страница 756: ...Chapter 41 Addresses ZyWALL USG 100 200 Series User s Guide 756 ...
Страница 768: ...Chapter 43 Schedules ZyWALL USG 100 200 Series User s Guide 768 ...
Страница 784: ...Chapter 45 Authentication Method ZyWALL USG 100 200 Series User s Guide 784 ...
Страница 806: ...Chapter 46 Certificates ZyWALL USG 100 200 Series User s Guide 806 ...
Страница 818: ...Chapter 48 SSL Application ZyWALL USG 100 200 Series User s Guide 818 ...
Страница 828: ...Chapter 49 Endpoint Security ZyWALL USG 100 200 Series User s Guide 828 ...
Страница 880: ...Chapter 50 System ZyWALL USG 100 200 Series User s Guide 880 ...
Страница 920: ...Chapter 54 Reboot ZyWALL USG 100 200 Series User s Guide 920 ...
Страница 922: ...Chapter 55 Shutdown ZyWALL USG 100 200 Series User s Guide 922 ...
Страница 942: ...Chapter 56 Troubleshooting ZyWALL USG 100 200 Series User s Guide 942 ...
Страница 954: ...Chapter 57 Product Specifications ZyWALL USG 100 200 Series User s Guide 954 ...
Страница 1126: ...Appendix F Open Software Announcements ZyWALL USG 100 200 Series User s Guide 1126 ...