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NAT – Port Triggering

Some applications require that specific ports in the Router's firewall be opened for access by the remote parties. Port Trigger dynamically opens up the 'Open

Ports' in the firewall when an application on the LAN initiates a TCP/UDP connection to a remote party using the 'Triggering Ports'. The Router allows the remote

party from the WAN side to establish new connections back to the application on the LAN side using the 'Open Ports'. A maximum 32 entries can be configured.

To Add a Port Triggering Rule click the

Add

button.

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Some applications such as games, video conferencing, remote access

applications and others require that specific ports in the Router's firewall be

opened for access by the applications.

You can configure the port settings from this screen by selecting an existing

application or creating your own (Custom application) and click

Save/Apply

to

add it.

A maximum number of 32 entries can be configured.

View the newly added rule.

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NAT – DMZ Host

The DSL router will forward IP packets from the WAN that do not belong to any of the applications configured in the Virtual Servers table to the DMZ host

computer.

Enter the computer's IP address and click

Save/Apply

to activate the DMZ

host.

Clear the IP address field and click

Save/Apply

to deactivate the DMZ host.

NAT – ALG

ALG, known as Application Level Gateway or Application Layer Gateway, consists of a security component that augments a firewall or NAT employed in a

computer network. The main function for ALG on this gateway is to allow NAT traversal to SIP applications.

Tick the

SIP Enabled

check box to enable ALG on this router and click

Save/Apply

.

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Security – IP Filtering

When a computer connects to the Internet, it begins communicating with other networking device and computers and by the norm is taking a risk. Internet

Security is the method to safely secure a local network from unwanted intrusions from the Internet and also to the Internet. This page allow for two main security

methods that can be used. The first method is to block any node and ONLY allowing certain users to connect through this router. The second method is to allow

any node and ONLY blocking certain users to connect through this router.

The basic firewall of this router should be sufficient enough to keep unwanted guests from browsing your network from the Internet. This page will add to this

already applied security feature

IP Filtering - Outgoing

This window allows you to create a filter rule to block outgoing IP traffic by

specifying a filter name and at least one condition on this window. All of the

specified conditions in this filter rule must be satisfied for the rule to take effect.

Filters are used to allow or deny LAN or WAN users from accessing the Internet

or your internal network. Click the

Change Policy

to change between

BLOCK

and

ACCEPT

the rules.

If you are setting up the outgoing IP filtering, click the

Add

button.

IP Filtering – Incoming

The Inbound Filter allows you to create a filter rule to allow incoming IP traffic

by specifying a filter name and at least one condition on this window. All of the

specified conditions in this filter rule must be satisfied for the rule to take effect.

By default, all incoming IP traffic from the Internet is blocked when the firewall is

enabled. Click the

Change Policy

to change between

BLOCK

and

ACCEPT

the rules.

If you are setting up the incoming IP filtering, click the

Add

button.

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Filter Name:

Protocol:

Source IP Address:

Source Subnet

Mask:

Source Port:

Destination IP

Address:

Destination Subnet

Mask:

Destination Port:

Outgoing Rule - Add

Enter a name for the new rule here.

Select the appropriate protocol used here.

Enter the Source IP address here.

Enter the Source Subnet Mask here.

Enter the Source port number here.

Enter the Destination IP address here.

Enter the Destination Subnet Mask here.

Enter the Destination port number here.

Click

Apply/Save

to add the rule.

Filter Name:

Protocol:

Source IP Address:

Source Subnet

Mask:

Source Port:

Destination IP

Address:

Destination Subnet

Mask:

Destination Port:

WAN/LAN

Interfaces:

Incoming Rule - Add

Enter a name for the new rule here.

Select the appropriate protocol used here.

Enter the Source IP address here.

Enter the Source Subnet Mask here.

Enter the Source port number here.

Enter the Destination IP address here.

Enter the Destination Subnet Mask here.

Enter the Destination port number here.

Here you can select the appropriate WAN/LAN interface

that this rule will use.

Click

Apply/Save

to add the rule.