I have struggled with this for years - feeling like I need to resolve my trusted vs internet settings.
My config should not be that unusual - 3 PCs all connected to a switch that uplinks to a DHCP enabled router that also has a DSL modem cabled to it. All 3 PCs share the same internet connection but there is no ICS application running on any PC.
When I install ZoneAlarm it detects one network: 192.168.2.0 as a trusted network. My router's IP is 192.168.2.1. ZoneAlarm never discovers another "network" that I can attribute as the "internet" so I change the only network it does find to "internet". The result though is crippled connections with my LAN.
I get the sense that I need to add some settings manually but not sure quite what to add to get proper insulation from the internet with openness on my trusted LAN.
Operating System:Windows XP Pro
Product Name:ZoneAlarm Internet Security Suite