Some technical with firewall and time setting

Hi,

I need help with opening CC on my Mac. When I open the computer, I am not able to connect to the app.  The message say,
" Please check your firewall settings, ensure that you time setting is correct and try again."

I look at the upper hand side corner, the time is correct in my zone time.  What should I do? How do check the time setting for the firewall. Please help.

Thank you