11-24 User’s Reference Guide
Example filter set screen
This is an example of the Netopia filter set screen:
Change Input Filter 1
Enabled: | Yes |
Forward: | No |
Source IP Address: | 0.0.0.0 |
Source IP Address Mask: | 0.0.0.0 |
Dest. IP Address: | 0.0.0.0 |
Dest. IP Address Mask: | 0.0.0.0 |
Protocol Type: | TCP |
Source Port Compare... | No Compare |
Source Port ID: | 0 |
Dest. Port Compare... | Equal |
Dest. Port ID: | 2000 |
Established TCP Conns. Only: | No |
Filter basics
In the source or destination IP address fields, the IP address that is entered must be the network address of the subnet. A host address can be entered, but the applied subnet mask must be 32 bits (255.255.255.255).
The Netopia 4541/4542 has the ability to compare source and destination TCP or UDP ports. These options are as follows:
Item | What it means |
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No Compare | Does not compare TCP or UDP port |
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Not Equal To | Matches any port other than what is defined |
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Less Than | Anything less than the port defined |
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Less Than or Equal | Any port less than or equal to the port defined |
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Equal | Matches only the port defined |
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Greater Than or Equal | Matches the port or any port greater |
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Greater Than | Matches anything greater than the port defined |
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