What is firewall? Should firewall be on or off?
Software that controls what incoming and outgoing connections are allowed on your machine. On.
The firewall is to keep other people from accessing your computer, yes, turn it on. System preferences>security>firewall, click start.
It should be on.
Go to Apple's Knowledge Base and read all the articles about Firewire. Especially the articles pertaining to your os system.
I had it off. That was dangerous for my mac?
Firewall protects from viruses?
It mostly protects from unauthorized access to your machine. Common sense is your best protection from virus/trojan problems. Search this site, as there are great many posts regarding this subject.
Macs do not get viruses.
User Tip: Mac Viruses
It doesn’t get PC viruses.
As previously suggested, read the Knowledge Base articles on Firewalls.
Yes my mac probably has a virus...A music plays after two or three hours of use.A music song that i havent in my playlistand plays even if i quit all the applications...
Retrieving data ...