Netopia Firmware 4000-Series Manual do Utilizador descarregar pdf (Página 266)

10-42 Firmware User Guide

This incoming IP packet has a source IP address that matches the network address in the Source IP Address

ﬁeld (00000000) in the Netopia Firmware Version 5.4. This will

not

forward this packet.

Example 2

Incoming packet has the source address of 200.1.1.184.

This incoming IP packet (10000000) has a source IP address that does not match the network address in the

Source IP Address ﬁeld (00000000) in the Netopia Firmware Version 5.4. This rule

will

forward this packet

because the packet does not match.

Example 3

Incoming packet has the source address of 200.1.1.184.

00000000 (Logical AND result)

Filter Rule: 200.1.1.0 (Source IP Network Address)

255.255.255.128 (Source IP Mask)

Forward = No (What happens on match)

IP Address Binary Representation

200.1.1.184 10111000 (Source address in incoming IP packet)

AND

255.255.255.128 10000000 (Perform the logical AND)

10000000 (Logical AND result)

Filter Rule: 200.1.1.96 (Source IP Network Address)

255.255.255.240 (Source IP Mask)

Forward = No (What happens on match)

IP Address Binary Representation

200.1.1.184 10111000 (Source address in incoming IP packet)

AND

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Netopia Firmware 4000-Series Manual do Utilizador Página 266