[muglo] Firewall Protection for Dial-Up System?

Is firewall protection necessary for a dial-up system?  I'm using 
8.6/9.0.4.  I always update my virus protection every month.  I was 
of the impression that firewall protection was only necessary for 
"always on" systems.  I've got the bottom feeder casual cruise with 
sympatico.  From previous posts I understand there may be more 
security risks if I were to upgrade to OSX.  Pls advise.


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