Chapter 24 Firewall
ZyWALL USG 300 User’s Guide
461
the firewall rule to always be in effect. The following figure shows the results of
this rule.
Figure 340
Blocking All LAN to WAN IRC Traffic Example
Your firewall would have the following rules.
• The first row blocks LAN access to the IRC service on the WAN.
• The second row is the firewall’s default policy that allows all LAN to WAN traffic.
The ZyWALL applies the firewall rules in order. So for this example, when the
ZyWALL receives traffic from the LAN, it checks it against the first rule. If the
traffic matches (if it is IRC traffic) the firewall takes the action in the rule (drop)
and stops checking the firewall rules. Any traffic that does not match the first
firewall rule will match the second rule and the ZyWALL forwards it.
Now suppose that your company wants to let the CEO use IRC. You can configure
a LAN to WAN firewall rule that allows IRC traffic from the IP address of the CEO’s
computer. You can also configure a LAN to WAN rule that allows IRC traffic from
any computer through which the CEO logs into the ZyWALL with his/her user
name. In order to make sure that the CEO’s computer always uses the same IP
address, make sure it either:
• Has a static IP address,
or
• You configure a static DHCP entry for it so the ZyWALL always assigns it the
same IP address (see
for information on DHCP).
Table 119
Blocking All LAN to WAN IRC Traffic Example
#
USER
SOURCE
DESTINATION
SCHEDULE SERVICE
ACTION
1
Any
Any
Any
Any
IRC
Deny
2
Any
Any
Any
Any
Any
Allow
Содержание USG-300 - V2.20 ED 2
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Страница 30: ...Table of Contents ZyWALL USG 300 User s Guide 30 ...
Страница 31: ...31 PART I User s Guide ...
Страница 32: ...32 ...
Страница 38: ...Chapter 1 Introducing the ZyWALL ZyWALL USG 300 User s Guide 38 ...
Страница 46: ...Chapter 2 Features and Applications ZyWALL USG 300 User s Guide 46 ...
Страница 64: ...Chapter 3 Web Configurator ZyWALL USG 300 User s Guide 64 ...
Страница 74: ...Chapter 4 Installation Setup Wizard ZyWALL USG 300 User s Guide 74 ...
Страница 116: ...Chapter 6 Configuration Basics ZyWALL USG 300 User s Guide 116 ...
Страница 128: ...Chapter 7 Tutorials ZyWALL USG 300 User s Guide 128 Figure 73 Configuration Network Interface WLAN Add ...
Страница 184: ...Chapter 7 Tutorials ZyWALL USG 300 User s Guide 184 ...
Страница 221: ...Chapter 8 L2TP VPN Example ZyWALL USG 300 User s Guide 221 ...
Страница 222: ...Chapter 8 L2TP VPN Example ZyWALL USG 300 User s Guide 222 ...
Страница 223: ...223 PART II Technical Reference ...
Страница 224: ...224 ...
Страница 238: ...Chapter 9 Dashboard ZyWALL USG 300 User s Guide 238 ...
Страница 282: ...Chapter 10 Monitor ZyWALL USG 300 User s Guide 282 ...
Страница 303: ...Chapter 13 Interfaces ZyWALL USG 300 User s Guide 303 Figure 269 Configuration Network Interface Ethernet Edit ...
Страница 320: ...Chapter 13 Interfaces ZyWALL USG 300 User s Guide 320 Figure 275 Configuration Network Interface Cellular Add ...
Страница 330: ...Chapter 13 Interfaces ZyWALL USG 300 User s Guide 330 Figure 278 Configuration Network Interface WLAN Add No Security ...
Страница 345: ...Chapter 13 Interfaces ZyWALL USG 300 User s Guide 345 Figure 286 Configuration Network Interface VLAN Edit ...
Страница 355: ...Chapter 13 Interfaces ZyWALL USG 300 User s Guide 355 Figure 288 Configuration Network Interface Bridge Add ...
Страница 378: ...Chapter 14 Trunks ZyWALL USG 300 User s Guide 378 ...
Страница 394: ...Chapter 15 Policy and Static Routes ZyWALL USG 300 User s Guide 394 ...
Страница 408: ...Chapter 16 Routing Protocols ZyWALL USG 300 User s Guide 408 ...
Страница 428: ...Chapter 19 NAT ZyWALL USG 300 User s Guide 428 ...
Страница 433: ...Chapter 20 HTTP Redirect ZyWALL USG 300 User s Guide 433 ...
Страница 434: ...Chapter 20 HTTP Redirect ZyWALL USG 300 User s Guide 434 ...
Страница 456: ...Chapter 23 Authentication Policy ZyWALL USG 300 User s Guide 456 ...
Страница 474: ...Chapter 24 Firewall ZyWALL USG 300 User s Guide 474 ...
Страница 481: ...Chapter 25 IPSec VPN ZyWALL USG 300 User s Guide 481 Figure 355 Configuration VPN IPSec VPN VPN Connection Edit IKE ...
Страница 492: ...Chapter 25 IPSec VPN ZyWALL USG 300 User s Guide 492 Figure 358 Configuration VPN IPSec VPN VPN Gateway Edit ...
Страница 515: ...Chapter 25 IPSec VPN ZyWALL USG 300 User s Guide 515 ...
Страница 516: ...Chapter 25 IPSec VPN ZyWALL USG 300 User s Guide 516 ...
Страница 529: ...Chapter 26 SSL VPN ZyWALL USG 300 User s Guide 529 ...
Страница 530: ...Chapter 26 SSL VPN ZyWALL USG 300 User s Guide 530 ...
Страница 540: ...Chapter 27 SSL User Screens ZyWALL USG 300 User s Guide 540 ...
Страница 542: ...Chapter 28 SSL User Application Screens ZyWALL USG 300 User s Guide 542 ...
Страница 550: ...Chapter 29 SSL User File Sharing ZyWALL USG 300 User s Guide 550 ...
Страница 635: ...Chapter 34 IDP ZyWALL USG 300 User s Guide 635 ...
Страница 636: ...Chapter 34 IDP ZyWALL USG 300 User s Guide 636 ...
Страница 646: ...Chapter 35 ADP ZyWALL USG 300 User s Guide 646 Figure 448 Profiles Protocol Anomaly ...
Страница 657: ...Chapter 35 ADP ZyWALL USG 300 User s Guide 657 ...
Страница 658: ...Chapter 35 ADP ZyWALL USG 300 User s Guide 658 ...
Страница 690: ...Chapter 37 Content Filter Reports ZyWALL USG 300 User s Guide 690 ...
Страница 708: ...Chapter 38 Anti Spam ZyWALL USG 300 User s Guide 708 ...
Страница 730: ...Chapter 39 Device HA ZyWALL USG 300 User s Guide 730 ...
Страница 746: ...Chapter 40 User Group ZyWALL USG 300 User s Guide 746 ...
Страница 752: ...Chapter 41 Addresses ZyWALL USG 300 User s Guide 752 ...
Страница 764: ...Chapter 43 Schedules ZyWALL USG 300 User s Guide 764 ...
Страница 780: ...Chapter 45 Authentication Method ZyWALL USG 300 User s Guide 780 ...
Страница 802: ...Chapter 46 Certificates ZyWALL USG 300 User s Guide 802 ...
Страница 814: ...Chapter 48 SSL Application ZyWALL USG 300 User s Guide 814 ...
Страница 820: ...Chapter 49 Endpoint Security ZyWALL USG 300 User s Guide 820 Figure 534 Configuration Object Endpoint Security Add ...
Страница 824: ...Chapter 49 Endpoint Security ZyWALL USG 300 User s Guide 824 ...
Страница 876: ...Chapter 50 System ZyWALL USG 300 User s Guide 876 ...
Страница 916: ...Chapter 54 Reboot ZyWALL USG 300 User s Guide 916 ...
Страница 918: ...Chapter 55 Shutdown ZyWALL USG 300 User s Guide 918 ...
Страница 938: ...Chapter 56 Troubleshooting ZyWALL USG 300 User s Guide 938 ...
Страница 946: ...Chapter 57 Product Specifications ZyWALL USG 300 User s Guide 946 ...
Страница 1118: ...Appendix F Open Software Announcements ZyWALL USG 300 User s Guide 1118 ...