Example network, Example filters, Example 1 – Netopia R2121 User Manual

Page 196: Example filters -34

14-34 User’s Reference Guide

Example Network

Example Filters

Example 1

Incoming packet has the source address of 200.1.1.28

Less Than Or Equal

Any por t less than or equal to the por t defined

Equal

Matches only the por t defined

Greater Than or Equal

Matches the por t or any por t greater

Greater Than

Matches anything greater than the por t defined.

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)

Netopia

Internet

IP: 200.1.1.??

DATA

Incoming
Packet Filter