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Windows Filtering Platform

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Windows Filtering Platform (WFP) is a set of system services in Windows Vista and later that allows Windows software to process and filter network traffic. Microsoft intended WFP for use by firewalls, antimalware software, and parental controls apps. Additionally, WFP is used to implement NAT and to store IPSec policy configuration.

WFP relies on Windows Vista's Next Generation TCP/IP stack. It provides features such as integrated communication and per-application processing logic. Since Windows 8 and Windows Server 2012, WFP allows filtering at the second layer of TCP/IP suite.

Table of contents
  1. Components
  2. Diagnostics
  3. Hotfix


The filtering platform includes the following components:

Starting with Windows 7, the netsh command can diagnose of the internal state of WFP.


Microsoft released three out-of-band hotfixes for WPF in Windows Vista and Windows 7 to address issues that could cause a memory leak, loss of connectivity during a Remote Desktop Connection session, or a blue screen of death. Later, these hotfixes were rolled up into one package.

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