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Chapter 8. Security Setting
Asanté FriendlyNET FR1104-G User’s Manual 55
8.1 PACKET FILTERS – OUTBOUND FILTER
Packet filters allow you to control access to the network (local and Internet) by analyzing every
inbound and outbound packet. Depending upon the rule you define, packets will be evaluated
against source address, destination address, service port and time of day/week. Since inbound
packets are naturally filtered by the router’s NAT firewall, the inbound filters only protect the
Virtual Servers and DMZ host.
For example, a business may limit Internet resources (including peer-to-peer file sharing, music
stores and games) during business hours, Monday through Friday. With the powerful allow/deny
rules, you can make this rule apply to everyone (except yourself).
• Outbound Filter. Click to enable all the rules defined on this page.
Select one of the filtering policies:
1. Allow all to pass except those matching the rules defined in the table.
2. Block all except those matching the rules defined in the table.
• Source IP. Local IP address (typically in the form 192.168.123.100) or range of
addresses (192.168.123.1-192.168.123.255).
• Source Port. Enter a single port (e.g., 80) or a range of ports (1000-1999). To limit the
port range only to the TCP protocol, add a T prefix (e.g., T80) or U prefix (e.g., U80) for
UDP. No prefix indicates both TCP and UDP. Leave the field blank to specify all port
addresses.
• Destination IP. Specify a single IP address or a range of addresses.
• Destination Port. Enter a single port or range of ports.