c++ - How to write a good program for blocking unwanted / harmful websites -

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i intend write simple application block network traffic (http , https) unwanted / malicious web sites.

assumptions:

  • at beginning logic simple. after entering in browser address "black list" logic should take control under communication , send defined me site contents
  • later want add logic search web body looking unwanted / harmful words
  • the program written in c++
  • i not want use existing libraries (open source etc.) write scratch. j want learn windows network mechanism , layers

unfortunately, layman when comes play network layer in windows.

where start? , how should inject filtering logic?

you should windows filtering platform. api gives access network stack @ low level.


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