Fig 3.6.2.1

3.6.2.2 MAC Filter

Click

MAC Filter

in the left bar to open the screen of Fig 3.6.2.2. Entries in this table are used to restrict certain

types of data packets from your local network to Internet through the Gateway. Use of such filters can be helpful in

securing or restricting your local network.

Click the button

Apply Changes

to save the settings of this page.

Click the button

Add Rule

to add a new rule of the MAC Filter.

Fig 3.6.2.2

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3.6.2.3 URL Blocking

Click

URL Blocking

in the left bar to open the screen of Fig 3.6.2.3. This page is used to configure the Blocked

FQDN(Such as tw.yahoo.com) and filtered keyword. Here you can add/delete FQDN and filtered keyword.

Fig 3.6.2.3

3.6.3 Virtual Server

Click

Virtual Server

in the sub-menu to open the menu in the left bar,whick contains two items:

Services

and

DMZ Settings

.

3.6.3.1 Services

Click

Services

in the left bar to open the screen of Fig 3.6.3.1. This page is used to enable the servers in the local

network.

Click the button

Add

to add a virtual server.

32

Fig 3.6.3.1

3.6.3.2 DMZ Settings

Click

DMZ Settings

in the left bar to open the screen of Fig 3.6.3.2. A Demilitarized Zone is used to

provide Internet services without sacrificing unauthorized access to its local private network. Typically, the

DMZ host contains devices accessible to Internet traffic, such as Web (HTTP ) servers, FTP servers, SMTP

(e-mail) servers and DNS servers.

Select the checkbox

Enable DMZ

to enable this function. Then input a IP Address of the DMZ host.

Click the button

Apply Changes

to save the settings of this page.

Fig 3.6.3.2

3.6.4 Routing

Click

Routing

in the sub-menu to open the menu in the left bar, whick contains two items:

RIP

and

Static

Route.

33

3.6.4.1 RIP

Click

RIP

in the left bar to open the screen of Fig 3.6.4.1. Enable the RIP if you are using this device as a

RIP-enabled router to communicate with others using the Routing Information Protocol. This page is used to select the

interfaces on your deviceis that use RIP, and the version of the protocol used.

Fig 3.6.4.1

3.6.4.2 Static Route

Click

Static Route

in the left bar to open the screen of Fig 3.6.4.2-1. This page is used to configure the

routing information. Here you can add/delete IP routes.

Fig 3.6.4.2-1

Click the button Show Routes, the below window will appear. The table shows a list of destination routes

commonly accessed by your network.

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Fig 3.6.4.2-2

3.6.5 IP QoS

Click

Anti-dos

in the sub-menu to open the screen of Fig 3.6.5. Entries in this table are used to assign

the precedence for each incoming packet based on physical LAN port, TCP/UDP port number, and

source/destination IP address/subnet masks.

Fig 3.6.5

3.6.6 Anti-dos

Click

Anti-dos

in the sub-menu to open the screen of Fig 3.6.6. "denial-of-service attack"(DoS Attack) a

type of attack on a network that is designed to bring the network to its knees by flooding it with useless traffic. In

this page, you can configure to prevent DOS attacks.

Click the button

Apply Changes

to save the settings of this page.

35