"Ab unknown service (port 12323) is starting on your Mac

I have a MacBook Air OSX 10.9.5, yesterday I have load Norton 6.3 for Mac, since I already load the package:

  • the ventilator for my computer started to run very fast, not all the time, suddenly while I was working with my computer.
  • I receive a message "unknown serve running in port 4488" Should I allowed it?  and in case What I am allowing?
  • now I receive a message "Ab unknown service (port 12323) is starting on your Mac." the same questions What does it mean, what I am allowing?
  • I have write my experience in the forum in Apple and someone suggest that I should  uninstall Norton, because this package  is a problem.  Then should I don't protect my computer...it is not necessary?
  • Before I do a drastically solution, I would like to have a expertise opinion.  What I should answer to this questions? If I allow, I am allowing that other people see in my computer, then why I have a security package?
  • Which more question I will receive like this? please let me know. I think that it will be easy for Norton to have a catalog of question that we (users) will be receive after we load his product and which does it mean, I am user not expert, and of course this questions make me unsicher. 
  • Thanks in advance for your answer.  Best Regads, Judith