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Chapter 11 Filter configuration
N0115791
Configuring a Generic Filter Rule
This section shows you how to configure a generic filter rule. With generic rules
you can filter non-IP packets. For IP packets, it is generally easier to use the IP
rules directly.
For generic rules, the BCM50a Integrated Router 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 BCM50a
Integrated Router applies the Mask (using the bit-wise-AND action) 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 21.1.1.1 and press
[ENTER]
to open
Generic Filter Rule
, as shown in
Figure 59
.
Содержание BCM50a
Страница 18: ...18 Figures N0115791 ...
Страница 22: ...22 Tables N0115791 ...
Страница 28: ...28 Preface N0115791 ...
Страница 44: ...44 Chapter 2 Introducing the SMT N0115791 SMT menus at a glance Figure 6 SMT overview ...
Страница 52: ...52 Chapter 2 SMT menu 1 general setup N0115791 ...
Страница 64: ...64 Chapter 4 LAN setup N0115791 ...
Страница 68: ...68 Chapter 5 Internet access N0115791 ...
Страница 82: ...82 Chapter 6 Remote Node setup N0115791 ...
Страница 114: ...114 Chapter 9 Network Address Translation NAT N0115791 ...
Страница 140: ...140 Chapter 12 SNMP Configuration N0115791 ...
Страница 144: ...144 Chapter 13 System security N0115791 ...
Страница 160: ...160 Chapter 14 System information and diagnosis N0115791 ...
Страница 174: ...174 Chapter 15 Firmware and configuration file maintenance N0115791 ...
Страница 188: ...188 Chapter 17 Remote Management N0115791 ...
Страница 208: ...208 Appendix B Triangle Route N0115791 ...
Страница 228: ...228 Appendix D PPPoE N0115791 ...
Страница 230: ...230 Appendix E Hardware specifications N0115791 ...
Страница 240: ...240 Appendix F IP subnetting N0115791 ...
Страница 278: ...278 Appendix G Command Interpreter N0115791 ...
Страница 308: ...308 Appendix J Log descriptions N0115791 ...
Страница 310: ...310 Appendix K Brute force password guessing protection N0115791 ...