User`s guide

SpeedStream Wireless DSL Gateway Advanced Features
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IP Filtering
IP filtering options are only available if your Firewall Level setting is Custom. This method of firewall
protection is recommended for advanced users only. Click the Configuration button to step through the
IP Filter Configuration Wizard for Inbound and Outbound IP Filter Rules.
To use the IP filtering option:
1. Click the "Configure" hyperlink next to the "IP Filtering" heading.
2. Click Add New IP Filter Rule.
3. Type up to a five digit numeric value in the "Rule No" box.
4. Select either "Permit" or "Deny" from the "Access" drop-down. Select "Permit" to allow the rule and
"Deny" to not allow the rule.
5. Select either "Inbound" or "Outbound" from the "Direction" drop-down. Inbound refers to data
coming into the gateway, while outbound refers to data transmitted from the gateway.
6. Optionally, select the "Disable stateful inspection for packets matching this rule" option.
7. Optionally, select the "Create a log entry for packets matching this rule" option places an entry in the
log file when packets match this rule.
8. Click Next.
9. Under the "Source" heading, select a network connection from the "Network Interface" drop-down.
10. Select one of the following options:
• Any IP address: Select this option if this rule applies to any IP address from the source.
• This IP address: Select this option if a rule applies to a specified IP address of the source. Type
the IP address and netmask in the boxes below this option.
11. Under the "Destination" heading, select a network connection from the "Network Interface" drop-
down.
12. Select one of the following options:
13. Any IP address: Select this option if this rule applies to any IP address from the destination.
14. This IP address: Select this option if a rule applies to a specified IP address of the destination. Type
the IP address and netmask in the boxes below this option.
15. Optionally, select the "or Host" checkbox to use your gateway netmask as the destination netmask.
16. Select one of the following options from the "Select by Name" drop-down:
17. TCP (Transmission Control Protocol): Provides reliable, sequenced, and unduplicated delivery of
bytes to remote or local users.
18. UDP (User Datagram Protocol): Provides for the exchange of datagrams without acknowledgement or
guaranteed delivery.
19. ICMP (Internet Control Message Protocol): A mechanism that provides for peer communication. The
most commonly used application for this protocol is the PING command.