Page 196 / 272
Scroll up to view Page 191 - 195
Chapter 6
Security Configuration
174
4036168 Rev B
Incoming IP Filtering
By default, all incoming IP traffic from the WAN is blocked when the firewall is
enabled. However, some IP traffic can be accepted by setting up filters.
Path
: Security > Packet Filtering > Incoming IP Filtering
Page 197 / 272
Incoming IP Filtering
4036168 Rev B
175
Adding an Incoming IP Filter
You can create a filter rule to identify incoming IP traffic by specifying a new filter
name and at least one condition for the filter. All of the specified conditions in this
filter rule must be satisfied for the rule to take effect.
To add an incoming IP filter, complete the following steps.
1
Click
Security
on the main screen. The MAC Filtering screen opens by default.
2
Select the
Incoming IP Filtering
tab. The Incoming IP Filtering screen opens.
Page 198 / 272
Chapter 6
Security Configuration
176
4036168 Rev B
3
Click
Add
. The Add IP Filter Incoming screen opens.
4
In the Filter Name field, enter the name of the filter.
5
In the Protocol field, select one of the following protocols:
TCP/UDP
TCP
UDP
ICMP
6
In the Source IP address field, enter the source IP address of the server sending
the incoming packets.
7
In the Source Subnet Mask field, enter the subnet mask of the server sending the
incoming packets.
8
In the Source Port field, enter the port number of the server sending the
incoming packets. You can enter one port or a range of ports using the following
format: port or port:port.
Example:
0:5 indicates ports 0 through 5.
9
In the Destination IP address field, enter the destination IP address for the server
receiving the packets.
10
In the Destination Subnet Mask field, enter the subnet mask for the server
receiving the packets.
Page 199 / 272
Incoming IP Filtering
4036168 Rev B
177
11
In the Destination Port field, enter the port number for the server receiving the
packets. You can enter one port or a range of ports using the following format:
port or port:port.
Example:
0:5 indicates ports 0 through 5.
12
Do you want to select all of the WAN interfaces?
If
yes
, check the
Select All
field under WAN Interfaces (Configured in
Routing mode and with firewall enabled only).
If
no
, clear the
Select All
field under WAN Interfaces (Configured in Routing
mode and with firewall enabled only).
13
Click
Save/Apply
to add the filter.
Enabling the Filtering Function
To enable the filtering function, complete the following steps.
1
Click
Security
on the main screen. The MAC Filtering screen opens by default.
Page 200 / 272
Chapter 6
Security Configuration
178
4036168 Rev B
2
Click
Incoming IP Filtering
. The Incoming IP Filtering screen opens.
3
Check the
Enable Filtering Function
check box to enable the filtering function.
Removing an Incoming IP Filter
To remove an incoming IP filter, complete the following steps.
1
Click
Security
on the main screen. The MAC Filtering screen opens by default.
19216811.live