Sunday, May 11, 2008

Modifying Default Windows Firewall Configuration

The following are common scenarios for modifying the default configuration of Windows Firewall.
Third Party Firewall Enabled

An original equipment manufacturer (OEM) may choose to provide its customers with a third-party host-based firewall. If this firewall is enabled by default, then it is recommended that Windows Firewall be disabled. This can be done by modifying the Windows Firewall INF file to disable Windows Firewall by default.

Preinstalled Programs
An OEM or enterprise may choose to install a suite of programs by default. Some of these programs may need to receive unsolicited incoming traffic in order to function correctly. Windows Firewall can be configured to allow specific unsolicited incoming traffic by default by adding the programs to the Windows Firewall's exceptions list. This can be done by adding entries for the programs to the Windows Firewall INF file. Only programs that require unsolicited incoming traffic should be added to the exceptions list; programs that do not require unsolicited incoming traffic should not be added to the exceptions list.

Pre-Opened Ports
An enterprise may choose to use various network services and want to ensure that the network traffic for those services are allowed by default through Windows Firewall. For example, an enterprise may use some of the remote management functionality included in Windows XP. Windows Firewall can be configured to open the necessary ports by default by adding them to the Windows Firewall's exceptions list. This can be done by adding entries for the TCP or UDP ports to the Windows Firewall INF file. Statically opening ports does potentially increase a computer's exposure to attack, so the number of ports opened in Windows Firewall by default should be kept to a minimum.

Location of Windows Firewall INF file
On a Windows XP CD image, the location of the Windows Firewall INF file is:

Cd_drive:\I386\Netfw.in_

Note On a Windows XP CD image, the file's name is Netfw.in_ (not Netfw.inf).

After the installation of Windows XP with SP2, the location of the Windows Firewall INF file is:
%WINDIR%\Inf\Netfw.inf

Monday, May 5, 2008

Sound Driver in Laptop Acer Aspire 4315

To install windows XP on Laptop Acer Aspire 4315 sometimes get problem, after all windows program install in this laptop then we install driver for this laptop like for networking, driver for VGA graphic and driver for sound card.

Actually this laptop is recommended to install Windows Vista, because the driver itself is Vista compatible. When we try to install others Windows program the some driver are not run well.
The first time I install Windows XP Packed 3 and sound is run well, after I install office 2003 then I just realize that the speech program in the windows don’t appear, so the speech program in the office can’t running. When I open the control panel and look to the system device, there is a problem on PCI bus, this is one of the sound card components, the driver of this device is not installing perfectly.

When Install again a sound card driver is not overcomes the problem, then I decided to remove Windows again. Then install again windows XP packed 3, but the problem is more serious, even there is no sound after sound driver installs.

We can’t uninstall soundcard driver from sound device, to uninstall this driver should follow the procedure below:

We can’t remove or update the Realtek HD Audio device from the device manager.
If you have previous installation of the Realtek HD Audio driver then uninstall it first.
Open control panel, then Add/Remove programs, click on Realtek High Definition Audio driver and click remove button.

After uninstalling the Realtek High Definition audio driver, Open the Device Manager and look for the Microsoft UAA Bus Driver for High Definition Audio, Disable it and then remove. You will not be able to remove this device if you will not going to disable it first.

After you uninstall this Realtek High Definition Audio driver, install again the Realtek High Definition Audio driver from other resources like from Asus Motherboard resources CD, or other version of Realtek High Definition in Audio driver. If your driver is compatible with your windows XP, usually your soundcard will run.

For activated speech function, you may install update your windows XP packed with new version like Windows XP 2. After your windows install for update usually speech function will run normal.

Friday, May 2, 2008

Laptop DVD-R/ROM Problem

If you have a DVD Rom or DVD R on your laptop sometimes get a problem when running a CD, this problem sometimes is not cause of your DVD drive damage. Look your CD, if your CD can run in other PC DVD-Rom but can't run in your laptop DVD drive, this can cause of some reasons.

The first possibility problem is your Laptop DVD drive damage, but if your DVD drive can run other CD, this is really not cause of your DVD drive. Look to your CD, sometimes people is stick paper label on the other CD surface. This sticker sometimes disturbs your drive, and because your drive can't run fast enough to read the data in your CD, and the drive deciding to stop running. The result is your drive will don't read anything on the CD, and if you try to browse the CD drive will look empty or no data read. The construction of CD or DVD driver for laptop is very thin; the gap between CD and the upper drive body is just one millimeter so the CD should be very smooth to run in full speed. Stick out the label from your CD may overcome the problem on your drive.

If the problem still available, this may because of other matter on your drive. Better to read the specification of your DVD drive in more detail.