Ashampoo Firewall --> Windows 2000/XP www2.ashampoo.com/webcache/html/1/product_1_0050___EUR.htm Lizenz: Freeware ZoneAlarmFree --> Windows 2000/XP/Vista www.zonealarm.com/security/de/zonealarm-pc-security-free-firewall.htm Lizenz: Freeware PC Firewall Plus --> Windows XP/Vista/Win 7 www.pctools.com/de/firewall/ Lizenz: Freeware SoftPerfect Personal Firewall --> Windows 95/98/ME/NT/2000/XP/Server 2003/Vista www.softperfect.com/products/firewall/ Lizenz: Freeware Outpost Firewall --> Windows 2000/XP/Vista free.agnitum.com/ Lizenz: Freeware Online Armor Firewall --> Windows XP/Vista/Win 7 www.tallemu.com/products-online-armor-free.php Lizenz: Freeware R-Firewall --> Windows 98/ME/2000/XP www.r-tt.com/de/r-firewall/ Lizenz: Freeware Comodo Firewall --> Windows XP/Vista personalfirewall.comodo.com/download_firewall.html Lizenz: Freeware