Savungan   
by Egemen Tas   

Savungan is a stateful inspection firewall with full source code designed for Microsoft Windows platforms. It is an advanced filtering driver for TCP/IP based networks, having very flexible rule language to make packet inspection more powerful and effective. Savungan's firewall engine is an NDIS intermediate driver bound to all interfaces, performing important operations at the kernel level so that it operates fast and effective without wasting system and network resources.