22
The
Firewall
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 are destined for Virtual Servers or DMZ host
only. You can select one of the two filtering policies:
1.
Allow
all to pass except those that match the specified rules
2.
Deny
all to pass except those that match the specified rules
You can specify 8 rules for inbound or outbound. For each rule, you can
define the following:
•
Source IP address
•
Source port address
•
Destination IP address
•
Destination port address
For source or destination IP address, you can define a single IP address
(e.g., 4.3.2.1) or a range of IP addresses (e.g., 4.3.2.1-4.3.2.254). An empty
fields implies all IP addresses.
For source or destination port, you can define a single port (e.g., 80) or a
range of ports (e.g., 1000-1999).
Each rule can be enabled or disabled individually.
Inbound Filter:
To enable
the
Inbound Packet Filter,
click the check box next to
Enable
in
the
Inbound Packet Filter
field.
Outbound Firewall:
(to access the Outbound Filter, click
Outbound
Firewall
at the bottom of the window.)
To enable the
Outbound Packet Filter
click the check box next to
Enable
in
the
Outbound Packet Filter
field.
Follow the same procedure as for the Inbound Firewall.
The IP addresses
that you input will be blocked from the port activity that you input (e.g.,
browsing the internet, receiving mail etc.)
After
Outbound Packet Filter
setting is configured, click the
Apply
button.