Problems with Norton Security Suite and Virtualbox

Hello,

I have a Win 10 box that is running Virtualbox.  I had two clients installed.  

The clients could get to Internet fine, talk back / forth with each other and other physical PCs on the network.  

However, I installed Norton Security Suite and now, no one can talk to the two clients and the two clients can't talk to anyone.  

My first thought was that Norton's firewall was blocking Virtualbox, but it looks like it's allowed, but wondered if there's something more going on?  

I did some searches, looks like this has happened with others, but not finding any replies / solutions.  

Hopefully I'll have good luck.

Thanks,
Chris