Netopia 4752 User Manual
Page 198
13-26 Administration Guide
Example 4
Incoming packet has the source address of 200.1.1.104.
Since the Source IP Network Address in the Netopia 4752 is 01100000, and the source IP address after the
logical AND is 01100000, this rule does match and this packet will not be for warded.
Example 5
Incoming packet has the source address of 200.1.1.96.
Since the Source IP Network Address in the Netopia 4752 is 01100000, and the source IP address after the
logical AND is 01100000, this rule does match and this packet will not be for warded. This rule masks off a
single IP address.
Filter Rule:
200.1.1.96
(Source IP Network Address)
255.255.255.240
(Source IP Mask)
For ward = No
(What happens on match)
IP Address
Binar y Representation
200.1.1.104
01101000
(Source address in incoming IP packet)
AND
255.255.255.240
11110000
(Per form the logical AND)
01100000
(Logical AND result)
Filter Rule:
200.1.1.96
(Source IP Network Address)
255.255.255.255
(Source IP Mask)
For ward = No
(What happens on match)
IP Address
Binar y Representation
200.1.1.96
01100000
(Source address in incoming IP packet)
AND
255.255.255.255
11111111
(Per form the logical AND)
01100000
(Logical AND result)