Cisco WRVS4400Nv2 Router Manual PDF (Setup & Configuration Guide)

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WRVS4400N User Guide

60

Firewall Tab

Setting Up and Configuring the Router

Priority

—Defines the order on which rule is checked against first. The smaller number has

higher priority. The default rules will always be checked last.

Enable

—Tells the Router if the rule is active or not. You can have rules defined in the ACL Table

but in an inactive state. The administrator can decide on when to enable specific ACL rules

manually.

Action

—Defines how the rule is to affect the traffic. It can be either

Allow

or

Deny

. If the rule is

matched and the action is

Allow

, the packet will be forwarded. If the rule is matched and the

action is

Deny

, the packet will be dropped.

Service

—Select one of the pre-defined services in the drop-down menu or you can define new

services by clicking the

Service

Management

button. When you defined your own service, it

will be listed on the top of the drop-down menu. You can also select

ALL

to allow or block all

types of IP traffic.

The User-defined Service GUI page can be either accessed from the New Rule screen by clicking

Service Management

button, or you can access it directly from the 2nd layer tab under

Firewall.

Source Interface

—Select

LAN

,

WAN

, or

ANY

interface.

Source

—The source IP address to be matched against. You can define a

Single

IP address, a

Range

of IP addresses (start IP and end IP), a

Net

work (IP Prefix and Network Mask), or

ANY

IP

addresses.

Destination

—The destination IP address to be matched against. You can define a

Single

IP

address, a

Range

of IP addresses (start IP and end IP), a

Net

work (IP Prefix and Network Mask),

or

ANY

IP addresses.

Time

—Displays the time period this rule will be enabled (used together with Date). It can be

set to

Any Time

.

Date

—Displays the days in a week this rule will be enabled (used together with Time). It can be

set to

Any Day

.

Edit

button—Use this button to go to

Edit IP ACL Rule

screen and modify this rule.

Delete

button—Use this button to delete the ACL rule from the list.

The following is a description of the buttons in the IP Based ACL screen:

Page Selections

—Select specific page of ACL list from the drop-down menu to be displayed.

Or navigate them page by page through

Add New Rule

—Click this button to enter the page to define a new ACL rule.

Disable All Rule

—Click this page to disable all the user defined rules.

Delete All Rule

—Click this page to delete all the user defined rules.

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WRVS4400N User Guide

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Firewall Tab

Setting Up and Configuring the Router

Edit IP ACL Rule

This Web page can be entered only through

IP Based ACL

Tab. Enter this page by clicking

Add

New Rule

button on that page.

Action

—Select either

Allow

or

Deny

. Default is

Allow

.

Service

—Select ALL or pre-defined (or user-defined) services from the drop-down menu.

Log

—If checked, this ACL rule will be logged when a packet match happens.

Log Prefix

—This string will be attached in front of the log for the matched event.

Source Interface

—Select

LAN

,

WAN

, or

ANY

interface.

Source

—The source IP address to be matched against. You can define a

Single

IP address, a

Range

of IP addresses (start IP and end IP), a

Net

work (IP Prefix and Network Mask), or

ANY

IP

addresses.

Destination

—The destination IP address to be matched against. You can define a

Single

IP

address, a

Range

of IP addresses (start IP and end IP), a

Net

work (IP Prefix and Network Mask),

or

ANY

IP addresses.

Service Management

Button—Click this button and the Service Tab to add new service type

to the Service drop-down menu.

Scheduling

Time

—Enter the time period this rule will be applied (used together with Date). It can be set to

Any Time.

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WRVS4400N User Guide

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Firewall Tab

Setting Up and Configuring the Router

Date

—Enter the days in a week this rule will be applied (used together with Time). It can be set

to Any Day.

Change these settings as described here and click

Save Settings

to apply your changes, or click

Cancel Changes

to cancel your changes. Help information is displayed on the right-hand side

of the screen, and click

More

for additional details.

Internet Access Policy

Access to the Internet can be managed by policies. A policy consists of four components. You

need to define the PCs (MAC or IP address) to apply this policy, either

Deny

or

Allow

Internet

service, what time and date to enable this policy, and what URLs or Keywords to apply this

policy.

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WRVS4400N User Guide

63

Firewall Tab

Setting Up and Configuring the Router

Use the settings on this screen to establish an access policy. Selecting a policy from the drop-

down menu will display that policy's settings. You can then perform the following operations:

•

Create a Policy

—see instructions below.

•

Delete the current policy

—click the

Delete

button.

•

View all policies

—click the

Summary

button. On the Summary screen, the policies are

listed with the following information: No., Policy Name, Days, Time, and a checkbox to

delete (clear) the policy. To delete a policy, check the checkbox in the Delete column,

and click the Delete button.

•

View or change the PCs covered by the current policy

—click the

Edit List of PCs

button.

On the List of PCs screen, you can define PCs by MAC Address or IP Address. You can also enter

a range of IP Addresses if you want this policy to affect a group of PCs.

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WRVS4400N User Guide

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Firewall Tab

Setting Up and Configuring the Router

To create an Internet Access policy:

1.

Select the desired policy number from the

Internet Access Policy

drop-down menu.

2.

Enter a Policy Name in the field provided.

3.

Enable this policy by clicking the

Enable

option.

4.

Click the

Edit List of PCs

button to select which PCs will be affected by the policy. The List

of PCs screen appears in a sub-window. You can select a PC by MAC Address or IP Address.

You can also enter a range of IP Addresses if you want this policy to affect a group of PCs.

After making your changes, click the

Save Settings

button to apply your changes.

5.

Click the appropriate option,

Deny

or

Allow

, depending on whether you want to block or

allow Internet access for the PCs you listed on the List of PCs screen.

6.

Decide what Days and what Times you want this policy to be enforced. Select the individual

days during which the policy will be in effect, or select

Everyday

. Enter a range of hours and

minutes during which the policy will be in effect, or select

24 Hours

.

7.

If you wish to block access to Web sites, use the

Website Blocking by URL Address

or

Website Blocking by Keyword

feature.

•

Website Blocking by URL Address

. Enter the URL or Domain Name of the web sites

you wish to block.

•

Website Blocking by Keyword

. Enter the keywords you wish to block in the fields

provided. If any of these Keywords appears in the URL of a web site, access to the site

will be blocked. Note that only the URL is checked, not the content of each Web page.

8.

Click the

Save Settings

button to save the policy settings.

Single Port Forwarding

This is one of the NAPT (Network Address Port Translation) features. Use the Single Port

Forwarding screen when you want to open specific services (that use single port). This allows

users on the Internet to access this server by using the WAN port address and the matched

external port number. When users send these types of request to your WAN port IP address via

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