From the Bitdefender Help
"Stealth Mode - whether you can be detected by other computers.
Stealth Mode is NO. Your computer is invisible from both the local network and the Internet."
But this is not in the real, the Stealth Mode is not functioning as mentioned in the Help and my Laptop is not "Stealth" at all. I have two laptops let call them A (ih which Bitdefender installed and Stealth Mode is ON) and B (Microsoft Security Essentials installed). Now the situation is that A can be seen and access from the Windows Network option of B. Also I can also access the A from run command from B e.g. "\\Computer name" or "\\IP Address". But I can't ping A from B using command "ping IP Address of A", however surprisingly, I can ping A from B using command "ping Computer Name".
A detailed clarification is needed about the Stealth Mode functioning.
Network Type: Home/Office
User Mode: Enable
Build: 16.24.0.1682
Also I want to know the exact difference between the Untrusted Network Type and Stealth Mode ON?