How to install the WinPkFilter Device Driver
07-31-2014, 11:32 PM, (This post was last modified: 08-02-2014, 06:11 PM by nat32support.)
How to install the WinPkFilter Device Driver
The WinPkFilter driver is implemented as a Network Service that can be installed either manually, as outlined here, or from within NAT32 via the driver install command. On most platforms, once the driver has been installed, simply restart NAT32 to start using it.

To update the driver, uninstall the existing driver with command: driver uninstall and then reboot Windows. Only then should you install the new driver.

The driver itself is contained in a file called ndisrd.sys and various versions of this file exist, one for each specific platform and driver technology. During installation, the installer may prompt for the location of the ndisrd.sys file. If so, consult the following directory tree for the location of the needed version:
    IMDRV        # Intermediate drivers for Windows XP, Server 2003
      WIN32      # 32-bit version
      X64        # 64-bit version

    LWF          # Lightweight filter drivers for Windows 7, 8 and Vista
      WIN7_32    # Windows 7 32-bit version
      WIN7_64    # Windows 7 64-bit version
      WIN8_32    # Windows 8 32-bit version
      WIN8_64    # Windows 8 64-bit version
      WINV_32    # Vista     32-bit version
      WINV_64    # Vista     64-bit version
Prudent users will also install the NAT32 Certificate in order to verify the authenticity of downloads from the NAT32.COM website. This can be done in the NAT32 Console as follows: run nat32.cer

The SHA1 hash for the certificate is: B5044BF745E7821FCE1D4DBCE71642F62D593388

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