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User Manual for T2-B-Gawv1.4U10Y.BI
Teracom Limited
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3.5
Security
Click
Security
to enter security configuration page. On the left page, there are
three options:
IP Filtering
,
Port Forwarding
, and
Virtual Server
.
3.5.1
IP Filtering
Choose
Security
>
IP Filtering
and the following page appears. In this page, you
can specify the IP packet filtering rules to prevent unsolicited access from the
Internet or limit the Internet access from PCs on your network.
The IP filter feature enables you to create rules that control the forwarding of
incoming and outgoing data between the LAN and WAN side. When you define an
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User Manual for T2-B-Gawv1.4U10Y.BI
Teracom Limited
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An ISO Certificed Company
IP filter rule and enable it, you instruct the modem to examine data packets to
determine whether they meet the criteria. The criteria can include the network or
Internet protocol, the packet carries, the direction in
it is traveling.
Add an IP filter rule
The procedure for adding an IP filter rule is as follows:
Step 1
Enable
IP Filtering
and click
Add
.
Step 2
Enter the filter rule name and other parameters. Click
Apply
. In this
example, enter
aa
in the
Filter Rule Name
field. This rule named aa can
forbid any application corresponding to port from 1 to 80.
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User Manual for T2-B-Gawv1.4U10Y.BI
Teracom Limited
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An ISO Certificed Company
Step 3
Click
Apply
and the following page appears. In the
IP Filter
Configuration
page, you can view the result of the IP filter configuration.
3.5.2
Port Forwarding
Choose
Security
>
Port Forwarding
and the following page appears. In this page,
you can create, modify, and delete port forwarding rules. These rules allow
applications or software to work on your PCs if the Internet connection uses NAT.
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User Manual for T2-B-Gawv1.4U10Y.BI
Teracom Limited
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An ISO Certificed Company
Click
Add
and the following page appears. The IP packages of the Camerades
application of Audio/Video service that come from the WAN Interface ipwan is
forwarded to the host with IP address 192.168.1.2. If you select
User defined
with
a self-defined name, you can configure the parameters in the page.
3.5.3
Virtual Server
Choose
Security
>
Virtual Server
and the following page appears. A virtual server
is a PC on your local network that can be accessed from the Internet. All interfaces
for virtual server is listed.
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User Manual for T2-B-Gawv1.4U10Y.BI
Teracom Limited
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An ISO Certificed Company
Take pppoe_0_35 for example. Click
to show the
DMZ Host Configuration
page. Enter the host address, such as 192.168.1.2. Click
Apply
. Remote user can
access the host 192.168.1.2 by the interface pppoe_0_35. IP filter should be
disabled or add relevant rule. Otherwise, the access request can not reach the
DMZ host.).
3.6
Services
Click
Services
to enter service configuration page. On the left page, there are five
options:
IGMP Proxy
,
IPv4 Routing
,
IPv6 Routing
,
Quality of Service
,
and
Mac
Filtering
.
3.6.1
IGMP Proxy
Choose
Services
>
IGMP Proxy
and the following page appears. Internet Group
Multicast Protocol (IGMP) is used by routers and hosts that support multicasting.
All the systems on a physical network identify the multicast grouping of specific
hosts through IGMP. The multicast routers learn this information and forward the
multicast datagram to the corresponding interfaces. The IGMP proxy holds up the
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