Example network, Example filters, Example 1 – Netopia 3300 User Manual

Page 307: Example filters -43, Example ﬁlters

Security 10-43

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

Binary Representation

200.1.1.28

00011100

(Source address in incoming IP packet)

AND

255.255.255.128

10000000

(Per form the logical AND)

Data

Internet

IP 200.1.1.??

Input Packet

Filter