VoIP/(802.11g) ADSL2+ Router

Chapter 4: Configuration

Restart Router

Click

Restart

with option

Current Settings

to reboot your router (and restore your last saved

configuration).

If you wish to restart the router using the factory default settings (for example, after a firmware

upgrade or if you have saved an incorrect configuration), select

Factory Default Settings

to reset

to factory default settings.

You may also reset your router to factory settings by holding the small Reset pinhole button on the

back of your router in for 10-12 seconds whilst the router is turned on.

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VoIP/(802.11g) ADSL2+ Router

Chapter 4: Configuration

User Management

In order to prevent unauthorized access to your router’s configuration interface, it requires all users

to login with a password. You can set up multiple user accounts, each with their own password.

You are able to

Edit

existing users and

Create

new users who are able to access the device’s

configuration interface. Once you have clicked on

Edit,

you are shown the following options:

You can change the user’s

password

, whether their account is active and

Valid

, as well as add a

comment to each user account. These options are the same when creating a user account, with

the exception that once created you cannot change the username. You cannot delete the default

admin account, however you can delete any other created accounts by clicking

Delete

when

editing the user.

You are strongly advised to change the password on the default “

admin

” account when you

receive your router, and any time you reset your configuration to Factory Defaults.

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VoIP/(802.11g) ADSL2+ Router

Chapter 4: Configuration

Firewall and Access Control

Your router includes a full SPI (Stateful Packet Inspection) firewall for controlling Internet access from

your LAN, as well as helping to prevent attacks from hackers. In addition to this, when using NAT

(Network Address Translation. Please see the

WAN

configuration section for more details on NAT) the

router acts as a “natural” Internet firewall, as all PCs on your LAN will use private IP addresses that

cannot be directly accessed from the Internet.

Firewall

: Prevents access from outside your network. The router provides three levels of security

support:

NAT natural firewall

: This masks LAN users’ IP addresses which are invisible to outside users on the

Internet, making it much more difficult for a hacker to target a machine on your network. This natural

firewall is on when NAT function is enabled.

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When using Virtual Servers your PCs will be exposed to the degree

specified in your Virtual Server settings provided the ports specified are

opened in your firewall packet filter settings.

Firewall Security and Policy (General Settings)

: Inbound direction of Packet Filter rules to prevent

unauthorized computers or applications accessing your local network from the Internet.

Intrusion Detection

: Enable Intrusion Detection to detect, prevent and log malicious attacks.

Access Control

: Prevents access from PCs on your local network:

Firewall Security and Policy (General Settings)

: Outbound direction of Packet Filter rules to prevent

unauthorized computers or applications accessing the Internet.

URL Filter

: To block PCs on your local network from unwanted websites.

You can find six items under the

Firewall

section:

General Settings, Packet Filter, Intrusion

Detection, URL Filter

and

Firewall Log.

VoIP/(802.11g) ADSL2+ Router

Chapter 4: Configuration

General Settings

You can choose not to enable Firewall, to add all filter rules by yourself, or enable the Firewall

using preset filter rules and modify the port filter rules as required. The Packet Filter is used to filter

packets based-on Applications (Port) or IP addresses.

There are four options when you enable the Firewall, they are:

~

All blocked/User-defined

: no pre-defined port or address filter rules by default, meaning that

all inbound (Internet to LAN) and outbound (LAN to Internet) packets will be blocked. Users

have to add their own filter rules for further access to the Internet.

~

High/Medium/Low security level:

the predefined port filter rules for High, Medium and Low

security are displayed in Port Filters of Packet Filter.

Select either

High, Medium

or

Low

security level

to enable the Firewall. The only difference

between these three security levels is the preset port filter rules in the Packet Filter. Firewall

functionality is the same for all levels; it is only the list of preset port filters that changes between

each setting. For more detailed on level of preset port filter information, refer to

Table 1:

Predefined Port Filter

.

If you choose of the preset security levels and then add custom filters, you may temporarily disable

the firewall and recover your custom filter settings by re-selecting the same security level.

The “

Block WAN Request

” is a stand-alone function and not relate to whether security enable or

disable. Mostly it is for preventing any scan tools from WAN site by hacker.

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Any remote user who is attempting to perform this action may result in blocking

all the accesses to configure and manage of the device from the Internet.

VoIP/(802.11g) ADSL2+ Router

Chapter 4: Configuration

Packet Filter

This function is only available when the Firewall is enabled and one of these four security levels is

chosen (All blocked, High, Medium and Low).

The predefined port filter rules in the Packet Filter

must modify accordingly to the level of Firewall, which is selected.

See

Table1: Predefined Port

Filter

for more detailed information.

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