NetFilter SDK

NetFilter SDK is a developer toolkit for transparent filtering the outgoing TCP connections on Windows. 'Transparent' means that no changes are needed in settings of the network applications.

The toolkit is easy in use and suitable for creating various kinds of applications, which ususally require filtering HTTP, POP3, SMTP and other protocols.

The SDK based applications are compatible with our software, using various methods for transparent filtering TCP traffic: LSP, sockets hook, TDI or NDIS redirectors. The toolkit is protected from the filtering conflicts, when several local proxies are filtering the same TCP connections in cycle.

NetFilter SDK consists of two subsystems: TDI-level TCP redirector (kernel driver) and FiltersLib C++ library.