Specifications

161
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).
Netopia Embedded Software Version 7.7.4 has the ability to compare source and destination TCP or UDP
ports. These options are as follows:
Example network
Example filters
Example 1
Incoming packet has the source address of 200.1.1.28
Item What it means
No Compare Does not compare TCP or UDP port
Not Equal To Matches any port other than what is defined
Less Than Anything less than the port defined
Less Than or Equal Any port less than or equal to the port defined
Equal Matches only the port defined
Greater Than or Equal Matches the port or any port greater
Greater Than Matches anything greater than the port defined
Filter Rule: 200.1.1.0 (Source IP Network Address)
255.255.255.128 (Source IP Mask)
Forward = No (What happens on match)
Data
Internet
IP 200.1.1.??
Input Packet
Filter