I've decided to move on from Packet Tracer into GNS3. So far I've got IOSv installed on the GNS3 VM (sorry, I'm not sure if that sentence makes any sense; I'm new to VM's, which is why I'm worried about this issue).
Every now and then I get a bit of free time at work to poke around, and I just wanted to make sure GNS3 was 100% isolated from the real network. I see I now have two virtual NICs, which is also new to me.
Is there any possible way for GNS3 to bleed into a real network?