Firewall program for Mac
I have been careful to run an antivirus program on my iMac, and keep it up to date; I use Norton AV 8. Since I use a dial up connection, I have assumed that I did not need a Firewall program. Do I need one? If I have to buy one I want to get Norton? Personal Firewall for Macintosh® 2.0, is that a good one? Thanks.