Example Filters - Motorola Netopia Embedded Software Handbook

10-42 Administrator's Handbook
Less Than or Equal
Equal
Greater Than or Equal
Greater Than
Example network
Example filters
Example 1
Filter Rule:
Incoming packet has the source address of 200.1.1.28
IP Address
200.1.1.28
AND
255.255.255.128
Any port less than or equal to the port defined
Matches only the port defined
Matches the port or any port greater
Matches anything greater than the port defined
Input Packet
Filter
200.1.1.0
255.255.255.128
Forward = No
Binary Representation
00011100
10000000
00000000
Internet
Data
(Source IP Network Address)
(Source IP Mask)
(What happens on match)
(Source address in incoming IP packet)
(Perform the logical AND)
(Logical AND result)
IP 200.1.1.??