Security
Example network
Incoming
Packet Filter
Netopia
Internet
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| IP: 200.1.1.?? | ||
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| DATA | ||
Example filters |
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Example 1 |
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| Filter Rule: |
| 200.1.1.0 |
| (Source IP Network Address) |
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| 255.255.255.128 |
| (Source IP Mask) |
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| Forward = No |
| (What happens on match) |
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Incoming packet has the source address of 200.1.1.28 |
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| IP Address | Binary Representation |
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| 200.1.1.28 | 00011100 | (Source address in incoming IP packet) | ||||||
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| AND |
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| 255.255.255.128 | 10000000 | (Perform the logical AND) | ||||||
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| 00000000 | (Logical AND result) | |||||
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This incoming IP packet has a source IP address that matches the network address in the Source IP Address field (00000000) in the Netopia 4541/4542. This will not forward this packet.
