I just upgraded to Lion about a week ago. I am running Norton Internet Security and noticed in the firewall that 2 ports are in listening mode for the application launchd for Windows File Sharing. I have turn off all sharing services so im concerned why these ports would be listening. I have also noticed that when i use my web browser (either safari or firefox) that launchd connects to the internet through port 138.
Through some google searching i have found that Netbios uses these 2 ports which i am guessing and hoping is the explanation. I'm still confused though on what Netbios does (in non computer expert terms) and what the Netbios Datagram Distribution Service does on port 138. Are there any security concerns with this or is this normal activity for Lion.
I was using Snow Leopard with Norton firewall and never noticed this activity which is why i am asking/concerned.
Genuis bar did not have a good answer for me so i'm hoping someone here has the expertise on this.