C2-010 / C2-010-I ADSL2+ Router User’s Guide
5-6
Filter
Settings
Description
Src IP
Address
Select Any IP, Single IP,
or
IP Range
from the drop-down menu and then enter the
appropriate IP address or addresses that will be the source of packets this filter will act
upon.
Dest IP
Address
Select Any IP, Single IP,
or
IP Range
from the drop-down menu and then enter the
appropriate IP address or addresses that will be the destination of packets this filter will act
upon.
Source
Port
Select
Any Port, Single Port, Port Range,
or
Safe Range
. A port or range of ports that will be
used to connect to the Source IP address or addresses entered above. If
Any Port
is
entered, all ports in this IP range will be acted upon by this filter.
Dest Port
Select
Any Port, Single Port, Port Range,
or
Safe Range
. A port or range of ports that will be
used to connect to the Destination IP address or addresses entered above. If
Any Port
is
entered, all ports in this IP range will be acted upon by this filter.
Protocol
The protocol associated with this IP filter. The user may choose between
TCP, UDP
or
TCP;UDP
.
Action
Select between
Allow
or
Deny
.
Allow
will instruct the filter to allow packets that meet the
criteria entered above to cross the router, while
Deny
will instruct the router to drop any
packets that meet the above criteria. It should be noted the
Allow
will create a much more
restrictive filter than the
Deny
setting.
5.5 Inbound IP Filter Configuration
This window will aid the use in configuring filters for IP addresses. This will deny specified LAN IP
addresses or specific ports associated with these LAN IP address from accessing the Internet. Well known
ports have already been previously set in the
IP Filters List
and can be modified by clicking their
corresponding edit icon, and simple adding an IP address to the configuration. To access this screen, click
the
Advanced
tab along the top of the configuration window and then the
Filters
tab to the left hand side.
Figure 5-6. Inbound IP Filter menu
