Netopia R7200 manual Example

Models: R7200

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14-36 User’s Reference Guide

Since the Source IP Network Address in the Netopia R7200 is 01100000, and the source IP address after the logical AND is 01100000, this rule does match and this packet will not be forwarded.

Example 5

 

 

Filter Rule:

 

200.1.1.96

 

(Source IP Network Address)

 

 

 

 

 

 

 

 

 

 

 

 

 

255.255.255.255

 

(Source IP Mask)

 

 

 

 

 

 

 

 

 

 

 

 

 

Forward = No

 

(What happens on match)

 

 

 

 

 

 

 

 

 

Incoming packet has the source address of 200.1.1.96.

 

 

 

 

 

 

 

 

 

 

IP Address

Binary Representation

 

 

 

 

 

 

 

 

200.1.1.96

01100000

(Source address in incoming IP packet)

 

 

 

 

 

 

 

 

AND

 

 

 

 

 

 

 

 

 

 

255.255.255.255

11111111

(Perform the logical AND)

 

 

 

 

 

 

 

 

01100000

(Logical AND result)

 

 

 

 

 

 

 

 

Since the Source IP Network Address in the Netopia R7200 is 01100000, and the source IP address after the logical AND is 01100000, this rule does match and this packet will not be forwarded. This rule masks off a single IP address.

Page 186
Image 186
Netopia R7200 manual Example