User Manual

3.2.3.1 Packet Filters (Outbound & Inbound))
Packet Filter includes both outbound filter and inbound filter. And they have same way to setting.
Packet Filter enables you to control what packets are allowed to pass the gateway. Outbound filter applies
on all outbound packets. However, inbound filter applies on packets that destined to Virtual Servers or
DMZ host only. You can select one of the two filtering policies:
1. Allow all to pass except those match the specified rules
2. Deny all to pass except those match the specified rules
You can specify 8 rules for each direction: inbound or outbound. For each rule, you can define the
following:
• Source IP address
• Source port
• Destination IP address
• Destination port
• Protocol: TCP or UDP or both.
• Use Rule#
For source or destination IP address, you can define a single IP address (4.3.2.1) or a range of IP addresses
(4.3.2.1-4.3.2.254). An empty implies all IP addresses.
For source or destination port, you can define a single port (80) or a range of ports (1000-1999). Add prefix
"T" or "U" to specify TCP or UDP protocol. For example, T80, U53, U2000-2999, No prefix indicates both
TCP and UDP are defined. An empty implies all port addresses. Packet Filter can work with Scheduling
Rules, and give user more flexibility on Access control. For Detail, please refer to Scheduling Rule.
註解 [020]: 應改為 the same