DrayTek Vigor-2930n Router Manual PDF (Setup & Configuration Guide)

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Vigor2930 Series User’s Guide

68

PCs with subnet “172.16.x.x” connected under Vigor router will

be protected by security settings enabled and configured on the

web pages of Vigor router. When the transparent mode has been

checked, hackers from Internet do not sense the existence of

vigor router, therefore they cannot attack the router.

3.4.3 Filter Setup

Click

Firewall

and click

Filter Setup

to open the setup page.

To edit or add a filter, click on the set number to edit the individual set. The following page

will be shown. Each filter set contains up to 7 rules. Click on the rule number button to edit

each rule. Check

Active

to enable the rule.

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Filter Rule

Click a button numbered (1 ~ 7) to edit the filter rule. Click the

button will open Edit Filter Rule web page. For the detailed

information, refer to the following page.

Active

Enable or disable the filter rule.

Comment

Enter filter set comments/description. Maximum length is

23–character long.

Move Up/Down

Use

Up

or

Down

link to move the order of the filter rules.

Next Filter Set

Set the link to the next filter set to be executed after the current

filter run. Do not make a loop with many filter sets.

To edit

Filter Rule

, click the

Filter Rule

index button to enter the

Filter Rule

setup page.

Check to enable the

Filter Rule

Check this box to enable the filter rule.

Comments

Enter filter set comments/description. Maximum length is 14-

character long.

Index(1-15)

Set PCs on LAN to work at certain time interval only. You may

choose up to 4 schedules out of the 15 schedules pre-defined in

Applications >> Schedule

setup. The default setting of this filed is

blank and the function will always work.

Direction

Set the direction of packet flow (LAN->WAN/WAN->LAN). It is

for

Data Filter

only. For the

Call Filter

, this setting is not

available since

Call Filter

is only applied to outgoing traffic.

Source/Destination IP

Click

Edit

to access into the following dialog to choose the

source/destination IP or IP ranges.

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To set the IP address manually, please choose

Any Address/Single

Address/Range Address/Subnet Address

as the Address Type

and type them in this dialog. In addition, if you want to use the IP

range from defined groups or objects, please choose

Group and

Objects

as the Address Type.

From the

IP Group

drop down list, choose the one that you want

to apply. Or use the

IP Object

drop down list to choose the object

that you want.

Service Type

Click

Edit

to access into the following dialog to choose a suitable

service type.

To set the service type manually, please choose

User defined

as

the Service Type and type them in this dialog. In addition, if you

want to use the service type from defined groups or objects, please

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71

choose

Group and Objects

as the Service Type.

Protocol -

Specify the protocol(s) which this filter rule will apply to.

Source/Destination Port -

(=)

– when the first and last value are the same, it indicates one

port; when the first and last values are different, it indicates a range

for the port and available for this service type.

(!=)

– when the first and last value are the same,

it indicates all

the ports except the port defined here; when the first and

last

values are different, it indicates that all the ports except the range

defined here are available for this service type.

(>)

–

the port number greater than this value is available.

(<)

–

the port number less than this value is available for this

profile.

Service Group/Object

- Use the drop down list to choose the one

that you want.

Fragments

Specify the action for fragmented packets. And it is used for

Data

Filter

only.

Don’t care -

No action will be taken towards fragmented packets.

Unfragmented -

Apply the rule to unfragmented packets.

Fragmented -

Apply the rule to fragmented packets.

Too Short -

Apply the rule only to packets that are too short to

contain a complete header.

Filter

Specifies the action to be taken when packets match the rule.

Block Immediately -

Packets matching the rule will be dropped

immediately.

Pass Immediately -

Packets matching the rule will be passed

immediately.

Block If No Further Match -

A packet matching the rule, and that

does not match further rules, will be dropped.

Pass If No Further Match -

A packet matching the rule, and that

does not match further rules, will be passed through.

Branch to other Filter

Set

If the packet matches the filter rule, the next filter rule will branch

to the specified filter set. Select next filter rule to branch from the

drop-down menu. Be aware that the router will apply the

specified filter rule for ever and will not return to previous filter

rule any more.

APP Enforcement

All the packets/connections within the range configured in the

above conditions must follow the standard configured in the

APP

Enforcement

profile selected here. For detailed information, refer

to the section of

APP Enforcement

profile setup.

URL Content Filter

Select one of the

URL Content Filter

profile settings (created in

CSM>> URL Content Filter

) for applying with this router.

Please set at least one profile for choosing in

CSM>> URL

Content Filter

web page first. For troubleshooting needs, you can

specify to record information for

URL Content Filter

by

checking the Log box. It will be sent to Syslog server. Please refer

to section

Syslog/Mail Alert

for more detailed information.

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SysLog

For troubleshooting needs you can specify the filter log and/or

CSM log here. Check the corresponding box to enable the log

function. Then, the filter log and/or CSM log will be shown on

Draytek Syslog window.

Advance Setting

Click

Edit

to open the following window. However, it is

strongly

recommended

to use the default settings here.

Codepage

- This function is used to compare the characters

among different languages. Choose correct codepage can help the

system obtaining correct ASCII after decoding data from URL

and enhance the correctness of URL Content Filter. The default

value for this setting is ANSI 1252 Latin I. If you do not choose

any codepage, no decoding job of URL will be processed. Please

use the drop-down list to choose a codepage.

If you do not have any idea of choosing suitable codepage, please

open Syslog. From Codepage Information of Setup dialog, you

will see the recommended codepage listed on the dialog box.

Window size

– It determines the size of TCP protocol (0~65535).

The more the value is, the better the performance will be.

However, if the network is not stable, small value will be proper.

Session timeout

–Setting timeout for sessions can make the best

utilization of network resources. However, Queue timeout is

configured for TCP protocol only; session timeout is configured

for the data flow which matched with the firewall rule.

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