37

Configuring Firewall

The i3812V includes default firewall settings that block unwanted access from the Internet; it is

recommended that you leave the default settings in place. If necessary, you can allow Internet traffic or

users through the firewall to your LAN devices, applications, and servers. This section provides instructions

to:

•

Host an application on your network to allow users access on

page 38

•

Remove an application on your network to block users access on

page 38

•

Define an application profile on

page 41

•

Add multiple definitions to a profile on

page 45

•

Delete a user-defined application profile on

page 48

•

Allow all applications (DMZplus) on

page 49

•

Stop DMZplus on

page 51

•

Customize firewall settings on

page 52

Caution:

You should be knowledgeable with the firewall configuration to

modify these settings; otherwise, you are exposing your computer to outside

attacks.

iNID -- i3812V User Guide

38

Hosting an Application

To allow access from the Internet to applications running on computers inside your home network, you need

to open firewall pinholes and associate the intended application(s) with a computer connected with your

i3812V. If you cannot find a listing for your application, you can define an application with the protocol and

port information (refer to

Defining a New Application Profile

on page

41

.)

To host an application:

1.

Open a Web browser and enter

to access the 2Wire i3812V user interface.

2.

Click

on the

Home

page; the

Firewall Status

page opens.

Configuring Firewall

39

3.

Select

Applications, Pinholes and DMZ

; a page similar to the following opens showing the computers

that are connected to the i38HG/i3812V and the application list.

iNID -- i3812V User Guide

40

4.

Select the computer that you want to host the application(s).

5.

Select

Allow individual application(s)

.

6.

Filter the application list by selecting the category; your selection is displayed in the

Application List

panel.

7.

Select from the

Application List

panel the application(s) you want to host.

8.

Click

Add

; the application(s) you selected appears in the

Hosted Applications

panel.

9.

Click

Save

; a message appears informing you the status.

Removing Hosted Applications

1.

Open a Web browser and enter

to access the 2Wire i3812V user interface.

2.

Click

on the

Home

page; the

Firewall Status

page opens, displaying the current hosted application

settings.

Note:

If the computer you want to select is unlisted because it is powered

off and the “hide inactive devices” option is enabled; you still can select it as

long as it is on the same network and you know its IP address. Replace

“Enter IP address” with the intended IP address, then click

Choose

.

Note:

To select multiple applications, hold down the [Shift] or [Ctrl] keys

while making your selections. Using the [Shift] key lets you make your

selections in a contiguous order while the [Ctrl] key selects the groups in a

random order.

Configuring Firewall

41

3.

Select

Applications, Pinholes and DMZ

; a page opens showing hosted applications.

4.

Select the hosting computer if you do not see the pinhole you want to remove in the list.

5.

Scroll to the

Edit firewall settings for this computer

pane.

6.

Select the application(s) you want to remove from the

Hosted Applications

panel, click

Remove

.

7.

Click

Save

; a message appears informing you the status. The application(s) you selected is removed

from the

Hosted Applications

panel and returned to the

Application List

panel.

Defining a New Application Profile

An application profile configures your system’s firewall to pass through application-specific data. You can

define an application profile that is not included in the

Application List

. This feature is typically used if the

application for which you would like to pass through data to a given computer is new or has been recently

updated to a new version.

Note:

To select multiple applications, hold down the [Shift] or [Ctrl] keys

while making your selections. Using the [Shift] key lets you make your

selections in a contiguous order while the [Ctrl] key selects the groups in a

random order.