Example filters, Example 1, Example 2 – Netopia R5300 User Manual
Page 214: Example filters -36
13-36 User’s Reference Guide
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Exxxxaa
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pllllee
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e ffffiiiillllttttee
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errrrssss
E
E
E
Exxxxaa
a
am
m
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mp
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pllllee
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e 1111
Incoming packet has the source address of 200.1.1.28
This incoming IP packet has a source IP address that matches the network address in the Source IP Address
field (00000000) in the Netopia R5000 Series Router. This will not for ward this packet.
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2
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Incoming packet has the source address of 200.1.1.184.
Filter Rule:
200.1.1.0
(Source IP Network Address)
255.255.255.128
(Source IP Mask)
For ward = No
(What happens on match)
IP Address
Binar y Representation
200.1.1.28
00011100
(Source address in incoming IP packet)
AND
255.255.255.128
10000000
(Per form the logical AND)
00000000
(Logical AND result)
Filter Rule:
200.1.1.0
(Source IP Network Address)
255.255.255.128
(Source IP Mask)
For ward = No
(What happens on match)
IP Address
Binar y Representation
200.1.1.184
10111000
(Source address in incoming IP packet)
AND
255.255.255.128
10000000
(Per form the logical AND)
10000000
(Logical AND result)