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Restrict URL Features

•

Block Java Applet: Blocks Web content which includes the Java Applet to prevent

someone who wants to damage your system via the standard HTTP protocol.

•

Block ActiveX: Blocks ActiveX

•

Block Cookies: Blocks Cookies

•

Block Proxy: Blocks Proxy

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3.6.3.5 QoS

Quality of Service Introduction

If you’ve ever found your ‘net’ speed has slowed to a crawl because another family member

is using a P2P file sharing program, you’ll understand why the Quality of Service features in

routers is such a breakthrough for home users and office users.

QOS: Keeping Your Net Connection Fast and Responsive

Configurable by source IP address, destination IP address, protocol, and port, the Quality of

Service (QOS) gives you full control over which types of outgoing data traffic should be given

priority by the router, ensuring bandwidth-consumption data like gaming packets, latency-

sensitive application like voice, or even mission critical files, move through the router at

lightning speed, even under heavy load. You can throttle the speed at which different types of

outgoing data pass through the router. In addition, you can simply change the priority of

different types of upload data and let the router sort out the actual speeds.

QOS Setup

Please choose the

QOS

in the

Configuration

item of the left window as depicted below.

After clicking the QOS item, you can Add/Edit/Delete a QOS policy.

This page will show the

brief information for policies you have added or edited.

This page will also display the total

available (Non-assigned) bandwidth, in percentage, can be assigned.

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Application

: A name that identifies an existing policy.

Time Schedule

: Scheduling your QOS policy to be applied.

Direction

: The traffic flow direction to be controlled by the QOS policy.

There are two settings to be provided in the Router:

~

LAN to WAN:

You want to control the traffic flow from the local network to the outside

world.

E.g., you have a FTP server inside the local network and you want to have a limited

traffic rate controlled by the QOS policy.

So, you need to add a policy with LAN to WAN

direction setting.

~

LAN to WAN

: Control Traffic flow from the WAN to LAN.

The connection maybe either

issued from LAN to WAN or WAN to LAN.)

Assigned Bandwidth Ratio

: This field shows the assigned bandwidth ratio in percentage

for a QOS policy.

If WAN connection to internet is established, the estimated transfer rate

will be shown in kbps.

You may specify a fixed transfer rate or Minimum Guaranteed Rate

with priority for non-used bandwidth.

Non-Assigned Bandwidth Ratio

: This field shows the available bandwidth ratio, for LAN to

WAN and WAN to LAN, that has not yet assigned.

: Press this button to add a new QOS policy.

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: Before using these buttons to edit or delete a policy, please select one policy

you want to edit/delete from the radio option

.

: After you have configured the policies, you can press this button to apply the

configuration.

If you want to make the change persistent in flash, choose

in the left windows to save it into flash.

When you press

or

buttons described above, the following page will show up in

your browser.

You can use it to define a QOS policy.

Controlled Traffic Flow:

Specify the traffic flow you want to control. For GRE protocol,

there is no need to specify the IP addresses or Application ports in this page. For other

protocols, at least one value shall be given.

Packet type

: The packet type will be controlled.

For GRE protocol, there is no need to

specify the IP addresses or Application ports in this page. For other protocols, at least one

value shall be given.

~

ANY:

No specified protocol type is specified.

~

TCP

~

UDP

~

ICMP

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~

GRE:

For PPTP VPN Connections.

Assigned Data rate:

Assign the data ratio for this policy to be controlled.

For examples,

we want to only allow 20% of the total data transfer rate for the LAN-to-WAN direction to be

used for FTP server.

Then we can specify here with data ratio = 20.

If you have ADSL

LINE with 256K/bps.rate, the estimated data rate, in kbps, for this rule is 20%*256*0.9 =

46kbps.

(For 0.9 is an estimated factor for the effective data transfer rate for a ADSL LINE

from LAN to WAN. For WAN-to-LAN, it is 0.85 to 0.8).

Data Ratio

: percentage for the data rate to be controlled by this policy. As above FTP

server examples, it is 20.

Rate Type

: We provide 2 types here:.

~

Fixed (Maximum):

specify a fixed data rate for this policy.

It also is the maximal rate for

this policy.

As above FTP server example, you may want to “throttle” the outgoing FTP

speed to 20% of 256K and limit to it, you may use this type.

~

Guaranteed (Minimum):

specify a minimal data rate for this policy.

For example, you

want to provide a guaranteed data rate for your outside customers to access your internal

FTP server with, say at least, 20% of your total bandwidth.

You can use this type.

Then, if

there is available bandwidth that is not used, it will be given to this policy by following priority

assignment.

Priority for Non-used Bandwidth:

Specify the priority for the bandwidth that is not used.

For examples, you may specify two different QOS policies for different applications. Both

applications need a minimal bandwidth and need more bandwidth, beside the assigned one,

if there is any available/non-used one available.

So, you may specify which application can

have higher priority to acquire the non-used bandwidth.

~

High

~

Normal

: The default is normal priority.

~

Low

For the sample priority assignment for different policies, it is seved in a First-In-First-Out way.

DSCP Marking

: Differentiated Services Code Point (DSCP), it is the first 6 bits in the ToS

byte. DSCP Marking allows users to classify traffic based on DSCP value and send packets

to next Router.

DSCP Mapping Table

Disabled

None

Best Effort

Best Effort (000000)

Premium

Express Forwarding (101110)

Gold service (L)

Class 1, Gold (001010)

Gold service (M)

Class 1, Silver (001100)

Gold service (H)

Class 1, Bronze (001110)