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U.S. Robotics SureConnect ADSL Ethernet/USB Router User Guide
• Source Port. Transport layer source port. Options range from 0 to 65,535.
• Destination Port. Transport layer destination port. Options range from 0 to
65,535.
• Protocol. IP protocols to be filtered. Options are: Any (all), TCP, UDP, ICMP, AH,
ESP.
• TCP Flags. Filtering of the TCP Flags that control session setup and termination.
Options are: None, urg (Urgent), ack (acknowledgement), psh (push), rst (reset), syn
(synchronize), fin (finished).
Firewall Parameters
To edit a firewall parameter…
1. Click the radio button beside “Existing ActionID.”
2. Enter the “FW Action ID” to modify.
To create a new firewall parameter, Click the radio button beside “New Action.” The screen
presents you with a number of options and sub-options…
● Interface Name. Name of the Interface to apply the parameter to.
● FW Action. How the system handles packets. Your sub-options include…
§ Allow. Permits packets to enter or leave the system.
§ Reset. Forces the TCP connection to reset.
§ Reject. Drops the packet and issues an “unreach host” ICMP error.
§ Deny. Drops the packet.
● Direction. Specifies whether the action applies to incoming, outgoing, or both
incoming and outgoing traffic. Options are: Any, In, Out.
● Time. The parameter applies during the time period that you specify. Click the start
(From) day, time and stop (To) day and time.
To save and install firewall configuration data…
1. Input the data.
2. Click Apply.
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