39
3.2.1.2 IP Filtering
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 router. 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
•
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 destination port, you can define a single port (80) or a range of ports (1000-1999). 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.
