Virtual machine

[andrerds]

Hello friends good night. sorry I'm using google tratudor ..

I have a doubt, if a User using a virtual machine using virtualbox with network settings like nat, the firewall can detect?

[cmb]

It's not really clear what you're asking. Looks like you're in Brazil (or at least your IP is), you would probably be better off asking in Portuguese on our board here:
http://forum.pfsense.org/index.php/board,12.0.html