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Free and Open Source Software
Directory (FLOSS/FOSS)
Firewall Software
DCFirewall is a free (GPL) firewall for Windows. download page
isafer Winsock firewall can be used to check and block Spywares, Adwares, etc.. running in your PC and stealing your privacy. download page
Firewall FHK is a useful aplication that can be used as a security tool in your machine and network. download page
WIPFW is a MS Windows operable version of IPFW for FreeBSD OS. You can use the same functionality and configure it as only you work with IPFW. IPFW is a packet filtering and accounting system which resides in the kernelmode, and has a user-land control utility, ipfw. download page
other
- IP Filter Firewall [GNU GPL] - It's a IP Filter, which means it main purpose are to filter TCP/IP packets, based on a set of userdefined rules. IP Filter can be used as a simple firewall. In contrast to most Personal Firewall, IP Filter only check source/destination IP and ports, it does not bother to check which application uses the packet.
- PktFilter [BSD License] - PktFilter is a software that can configure the IP filtering device driver found in Windows 2000/XP/Server 2003, with filtering rules following a syntax similar to IP Filter.
- Winsock Firewall [GNU GPL]
- Simple TDI [GNU GPL] - Simple TDI-Based Open Source Personal Firewall for Windows NT4/2000/XP/2003.