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NetFilter SDK

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Demo   

Turn to this proxy-less framework to filter data packets transmitted via the network in a transparent manner and check its capabilities by examining the included samples. #TCP filtering  #TCP traffic  #NDIS redirector  #Filter  #Traffic  #TCP  

If you are exploring your options as far as filtering outgoing TCP connections and believe the main characteristic of the solution you are looking for should be straightforwardness, NetFilter SDK could come in handy.

The developer toolkit should allow you to do just that without requiring you to redirect the connections to the proxy and without applying modifications to the network applications, on both 32-bit and 64-bit Windows OSes.

And since we have touched upon the subject, it should be pointed out that the SDK can handle development tasks related to the content filters, traffic shapers and analyzers, basic app level firewalls, and more.

Being split into two main section, NetFilter SDK comprises the kernel as well as the user mode, with the latter being capable of filtering both incoming and outgoing TCP connections as well as UDP diagrams.

The transparency of the filtering process refers to the fact that redirecting the traffic to proxy and changing the addresses should not be necessary while trying to view and modify TCP or UDP data Implicitly, no interferences with firewalls, antivirus, and other filters should take place.

Aside from that, it is worth pointing out that high-speed connections should raise no difficulty to the framework, considering that the driver operates between the apps and the TCP/IP stack and is overall easy to use.

Limitations in the unregistered version

  • The demo driver filters no more than 1000000 TCP connections and UDP sockets.
  • After exceeding this limit the filtering continues again after system reboot.

What's new in NetFilter SDK 2 Build 1.6.8.5:

  • WFP driver 1.6.8.5
  • Fixed a compatibility issue with latest versions of Kaspersky.
Read the full changelog
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NetFilter SDK 2 Build 1.6.8.5

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  runs on:
Windows 11
Windows 10 32/64 bit
Windows Server 2012 R2
Windows Server 2012
Windows 2008 R2
Windows 2008 32/64 bit
Windows 2003
Windows 8 32/64 bit
Windows 7 32/64 bit
Windows Vista 32/64 bit
Windows XP 32/64 bit
  file size:
16 MB
  filename:
nfsdk-demo.zip
  main category:
Programming
  developer:
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