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Updated on 31 Jul, 20251 mins read 11 views

Why WFP?

WFP is a powerful API provided by Microsoft that lets developers hook into the Windows networking stack at multiple layers – from application-level protocols like HTTP to transport-level flows like TCP/IP.

With WFP, you can:

  • Intercept, inspect, block or redirect traffic
  • Filter packets by process, user, port, or protocol
  • Build kernel-mode callouts that see every byte of data
  • Create sophisticated rules in user-mode and update them live

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