D-Link 502G User Guide - Page 57
Comment, Pass or Block, Direction, Protocol, IP Address Filter Rule, Source, Destination, Port
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DSL-502G ADSL Router User's Guide For each rule in a set, you may define the following parameters: Comment Type in an appropriate identifying comment for the rule. Pass or Block Select Pass or Block to perform this action on packets as defined below. Direction Select In or Out to pass or block packets coming in or going out of the network. Protocol Select IGMP, TCP, UDP or All to pass or block packets of that protocol type. IP Address Filter Rule Source Type in the source IP address and select the Subnet Mask to pass or block packets form that IP address. Destination Type in the destination IP address and select the Subnet Mask to pass or block packets destined to that IP address. Port Filter Rule UDP and TCP packets only. Select a range of ports to pass or block. Use the following guide to define the port or port range (Start Port and End Port): < : specifies the port numbers less than and equal to the Start Port number > : specifies the port numbers greater than and equal to the Start Port number = : sets the port number equal to the Start Port if there is no End Port specified; if an End Port number is specified, this defines a range of ports to filter. The range is defined as the port numbers between the Start Port and End Port, including the Start and End Port numbers. ≠ : the port number does not equal to the Start Port if there is no End Port specified; if an End Port number is specified, this defines a range of ports not to filter. The range is defined as the port numbers between the Start Port and End Port, including the Start and End Port numbers. Filter Rule State Select enabled or disabled to enable or disable the filter rule as defined in the menu. When you have defined the rule, click on OK, the Save changes and reboot system prompt will appear. You can save and reboot now, or continue to define more filtering rules. To clear the rules menu to show the default values, click the Clear button. To return to the Set # menu, click the Exit icon. The comment you entered for new rule will appear next to the rule number. 45