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Chapter 40 Filter Configuration
ZyWALL 2WG User’s Guide
625
For generic rules, the ZyWALL treats a packet as a byte stream as opposed to an IP or IPX
packet. You specify the portion of the packet to check with the
Offset
(from 0) and the
Length
fields, both in bytes. The ZyWALL applies the Mask (bit-wise ANDing) to the data portion
before comparing the result against the Value to determine a match. The
Mask
and
Value
are
specified in hexadecimal numbers. Note that it takes two hexadecimal digits to represent a
byte, so if the length is 4, the value in either field will take 8 digits, for example,
FFFFFFFF
.
To configure a generic rule, select
Generic Filter Rule
in the
Filter Type
field in menu
21.1.x.x and press
[ENTER]
to open Generic Filter Rule, as shown below.
Figure 409
Menu 21.1.1.1: Generic Filter Rule
The following table describes the fields in the
Generic Filter Rule
menu.
Menu 21.1.1.1 - Generic Filter Rule
Filter #: 1,1
Filter Type= Generic Filter Rule
Active= No
Offset= 0
Length= 0
Mask= N/A
Value= N/A
More= No Log= None
Action Matched= Check Next Rule
Action Not Matched= Check Next Rule
Press ENTER to Confirm or ESC to Cancel:
Table 233
Generic Filter Rule Menu Fields
FIELD
DESCRIPTION
Filter #
This is the filter set, filter rule co-ordinates, i.e., 2,3 refers to the second filter set and the
third rule of that set.
Filter Type Use [SPACE BAR] and then [ENTER] to select a rule type. Parameters displayed below
each type will be different.
TCP/IP filter rules are used to filter IP packets while generic
filter rules allow filtering of non-IP packets.
Options are
Generic Filter Rule
and
TCP/IP Filter Rule
.
Active
Select
Yes
to turn on the filter rule or
No
to turn it off.
Offset
Enter the starting byte of the data portion in the packet that you wish to compare. The
range for this field is from 0 to 255.
Length
Enter the byte count of the data portion in the packet that you wish to compare. The range
for this field is 0 to 8.
Mask
Enter the mask (in Hexadecimal notation) to apply to the data portion before comparison.
Value
Enter the value (in Hexadecimal notation) to compare with the data portion.
More
If
Yes
, a matching packet is passed to the next filter rule before an action is taken; else
the packet is disposed of according to the action fields.
If
More
is
Yes
, then Action Matched and Action Not Matched will be
No
.
Содержание ZYWALL 2 WG
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Страница 8: ...Safety Warnings ZyWALL 2WG User s Guide 8 ...
Страница 42: ...List of Figures ZyWALL 2WG User s Guide 42 ...
Страница 50: ...List of Tables ZyWALL 2WG User s Guide 50 ...
Страница 52: ...52 ...
Страница 80: ...Chapter 2 Introducing the Web Configurator ZyWALL 2WG User s Guide 80 ...
Страница 100: ...Chapter 3 Wizard Setup ZyWALL 2WG User s Guide 100 ...
Страница 140: ...Chapter 4 Tutorial ZyWALL 2WG User s Guide 140 ...
Страница 145: ...145 PART II Network and Wireless LAN Screens 147 Bridge Screens 159 WAN Screens 165 DMZ Screens 201 Wireless LAN 211 ...
Страница 146: ...146 ...
Страница 158: ...Chapter 6 LAN Screens ZyWALL 2WG User s Guide 158 ...
Страница 171: ...Chapter 8 WAN Screens ZyWALL 2WG User s Guide 171 Figure 108 NETWORK WAN General ...
Страница 200: ...Chapter 8 WAN Screens ZyWALL 2WG User s Guide 200 ...
Страница 238: ...238 ...
Страница 258: ...Chapter 11 Firewall ZyWALL 2WG User s Guide 258 Figure 159 SECURITY FIREWALL Rule Summary Edit ...
Страница 270: ...Chapter 11 Firewall ZyWALL 2WG User s Guide 270 Figure 170 My Service Firewall Rule Example Rule Summary Completed ...
Страница 300: ...Chapter 13 Content Filtering Reports ZyWALL 2WG User s Guide 300 ...
Страница 313: ...Chapter 14 IPSec VPN ZyWALL 2WG User s Guide 313 Figure 199 SECURITY VPN VPN Rules IKE Edit Gateway Policy ...
Страница 322: ...Chapter 14 IPSec VPN ZyWALL 2WG User s Guide 322 Figure 202 SECURITY VPN VPN Rules IKE Edit Network Policy ...
Страница 348: ...Chapter 14 IPSec VPN ZyWALL 2WG User s Guide 348 ...
Страница 360: ...Chapter 15 Certificates ZyWALL 2WG User s Guide 360 Figure 229 SECURITY CERTIFICATES My Certificates Create Basic ...
Страница 378: ...Chapter 15 Certificates ZyWALL 2WG User s Guide 378 ...
Страница 380: ...Chapter 16 Authentication Server ZyWALL 2WG User s Guide 380 Figure 239 SECURITY AUTH SERVER Local User Database ...
Страница 384: ...384 ...
Страница 426: ...Chapter 20 Bandwidth Management ZyWALL 2WG User s Guide 426 ...
Страница 479: ...479 PART V Logs and Maintenance Logs Screens 481 Maintenance 511 ...
Страница 480: ...480 ...
Страница 485: ...Chapter 26 Logs Screens ZyWALL 2WG User s Guide 485 Figure 304 LOGS Log Settings ...
Страница 510: ...Chapter 26 Logs Screens ZyWALL 2WG User s Guide 510 ...
Страница 530: ...530 ...
Страница 558: ...Chapter 30 WAN and Dial Backup Setup ZyWALL 2WG User s Guide 558 ...
Страница 564: ...Chapter 31 LAN Setup ZyWALL 2WG User s Guide 564 ...
Страница 570: ...Chapter 32 Internet Access ZyWALL 2WG User s Guide 570 ...
Страница 574: ...Chapter 33 DMZ Setup ZyWALL 2WG User s Guide 574 ...
Страница 578: ...Chapter 34 Route Setup ZyWALL 2WG User s Guide 578 ...
Страница 582: ...Chapter 35 Wireless Setup ZyWALL 2WG User s Guide 582 ...
Страница 594: ...Chapter 37 IP Static Route Setup ZyWALL 2WG User s Guide 594 ...
Страница 614: ...Chapter 38 Network Address Translation NAT ZyWALL 2WG User s Guide 614 ...
Страница 632: ...Chapter 40 Filter Configuration ZyWALL 2WG User s Guide 632 ...
Страница 668: ...Chapter 44 System Maintenance Menus 8 to 10 ZyWALL 2WG User s Guide 668 ...
Страница 672: ...Chapter 45 Remote Management ZyWALL 2WG User s Guide 672 ...
Страница 680: ...Chapter 46 IP Policy Routing ZyWALL 2WG User s Guide 680 ...
Страница 685: ...685 PART VII Troubleshooting and Specifications Troubleshooting 687 Product Specifications 693 ...
Страница 686: ...686 ...
Страница 692: ...Chapter 48 Troubleshooting ZyWALL 2WG User s Guide 692 ...
Страница 702: ...Chapter 49 Product Specifications ZyWALL 2WG User s Guide 702 ...
Страница 704: ...704 ...
Страница 712: ...Appendix A Pop up Windows JavaScripts and Java Permissions ZyWALL 2WG User s Guide 712 ...
Страница 740: ...Appendix D Common Services ZyWALL 2WG User s Guide 740 ...
Страница 768: ...Appendix G Legal Information ZyWALL 2WG User s Guide 768 ...
Страница 774: ...Appendix H Customer Support ZyWALL 2WG User s Guide 774 ...