Page 71 / 143
Scroll up to view Page 66 - 70
71
To activate the IP address filter:
1
Enter the last byte (the numbers after the last period) of the IP address in
Start
Address
and
End Address
.
2
Check the
Enable
box to the right of the entry to store settings.
3
Click the
Apply
button to activate the filter rules.
Table 11. IP Filtering Menu Option
Option
Description
Start/End
Address
Enter the last byte of the IP address. The upper bytes of the IP
address are set automatically from the Cable Modem/Router IP
address.
Enable
To activate the IP address filter, you must also check the
Enable
box
and click
Apply
. You can disable this filter while retaining the
addresses you entered for later use.
MAC Filtering
The MAC Filtering page allows you to configure MAC address filters in order to block
Internet traffic to specific network devices on your LAN.
To access the
MAC Filtering
page:
1
Click
Advanced
in the menu bar.
2
Then click the
MAC Filtering
submenu.
Figure 18 shows an example of the menu and Table 10 describes the items you can
select.
Page 72 / 143
72
Figure 18. Example of MAC Filtering Page
Table 12. MAC Filtering Menu Option
Option
Description
MAC Address
PCs and other devices can be added to the MAC filter table by
entering their MAC addresses into the
Add MAC Address
box, and
clicking the
Add MAC Address
button. Internet traffic to and from
each listed Address will be blocked.
The Mac Addresses of the computers attached to your network can
be found in the
DHCP Clients
table.
To access the
DHCP Clients
table click on
Basic
on the menu bar then
DHCP
.
Page 73 / 143
73
Port Filtering
The Port Filtering page allows you to configure port filters in order to block Internet traffic
to specific ports on all devices on your LAN.
Similarly, you can prevent PCs from sending outgoing TCP/UDP traffic to the Internet
from specific IP port numbers. This can be configured using the Port Filtering page.
To access the
Port Filtering
page:
1
Click
Advanced
in the menu bar.
2
Then click the
Port Filtering
submenu.
Figure 19 shows an example of the menu and Table 11 describes the items you can
select.
Figure 19. Example of Port Filtering Page
Page 74 / 143
74
For example
, if you would like to block all PCs on the private LAN from accessing HTTP
sites (or “web surfing”):
1
Set the Start Port to
80
, the End Port to
80
.
2
Set the protocol to
TCP
.
3
Check the
Enable
box to the right of the entry to store settings.
4
Click
Apply
button to activate the filter rules.
Table 13. Port Filtering Menu Option
Option
Description
Start/End Port
Enters the start and end port of the port filter range
Protocol
Filter either both TCP and UDP traffic or just UDP or just TCP.
Forwarding
The Forwarding page allows you to run a publicly accessible server from your LAN by
specifying the mapping of TCP/UDP ports to a local PC. It allows incoming requests to
specific port numbers to reach a web server, FTP server, mail server, etc.
To access the
Forwarding
page,
1
Click
Advanced
in the menu bar.
2
Then click the
Forwarding
submenu.
3
To add a new IPv4 rule, click on the
Create IPv4 Rule
button, to add a new IPv6 rule
click on the
Create IPv6 Rule
.
Most users should select Create IPv4 rule unless
your LAN network is using IPv6.
Figure 20 shows an example of the menu and Table 12 describes the items you can
select.
Page 75 / 143
75
Figure 20. Example of Forwarding Page
To activate the port forwarding:
1
Enter the port range of the Internet traffic that you want to forward, and the IP
address of the server to which you want to forward that traffic.
2
Select the protocol(s) to be forwarded.
3
Check the
Enable
box to the bottom of the entry to store settings.
4
Click the
Apply
button to activate the forwarding rules.
Table 14. Forwarding Menu Option
Option
Description
External IP
Address
Enter the External IP address of the device that you want to allow
access to your network. If you do not know the address you can
leave this field blank.
Note:
The External IP Address is not the CM
WAN IP address shown on the status page. It is the address of the
remote device.
External
Start/End Port
Enter the range of port numbers (start and end port) from the
external device that you want to allow onto your network.
If you do
not know the address you can leave this field blank
Local IP
Enter the IP address to which forwarded traffic should be sent. If you
19216811.live