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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.
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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.
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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.
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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.
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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.
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