Which Firewall programs will work with Nav 2009 I've heard / read conflicting reports on this subject. As a former customer who relied upon NAV for several consecutive years only to jump ship recently for KAV (last two years). I am now open once more to considering other AV programs again. And while I'm well aware that NIS has a firewall component just as I was aware that Kaspersky KIS offered one as well I have never been a fan of security suits.
Zone Alarm Firewall (Free Version)
Comodo Firewall (have heard that selecting installation without HIPs might work)
IronArmor