Home router & Smart Security setup

Hi folks....

We have a home network with PC's (DHCP) and a network printer (fixed IP) all connected directly to an internet router via CAT5 Ethernet cables.

1. Whenever I reload windows(7) on one of the PC's & add ESET smart security the ESET software detects a new network and asks the usual question (trusted etc). What should I answer if we wish to allow the PC's to communicate with each other (playing network games etc) ?. I usually select 'not trusted' (or whatever it calls it) as the router is also connected to the internet. The last thing I want to do is compromise our internet security in any way. If my answer was wrong, how do I get it to ask the question again without re-installing ESET ?.

2. Even if my usual answer is correct, no games (Minecraft server, age of empires etc) can see the other PC(s). How do I allow this without compromising internet security ?.

Hopefully the answer is simple and makes sense

Regards

 

Select Trusted for your network

 

Yet the network is connected to the internet ?, so not 'trusted' ??

Regards