Terminal session - change in computer name

Code Zealot

I have noticed that when I am offline and I launch terminal the command line will be:
computer name ~ user name

When I am online the command line is:
2:~ user name

Can anyone explain why the computer name changes to " 2: " when I am online?

I appreciate your help.
You have file sharing turned on. If you check System Preferences>Sharing you will see the Computer’s name listed. File sharing works when you are online. You can turn File Sharing off if you don’t want to share.
Cheryl, thank you for your reply. I will need to double check but, I believe that sharing is turned off. What would be issue if sharing is turned off?
It could be the name your router or modem assigns to you. That would give you added security rather than showing your computer’s real name.