ZoneAlarm free firewall

Can be a little hard to setup but its one of the best free ones out there. I haven't used it in years.
 
I think Comodo also worked well. Im not now because im using the firewall with Kaspersky internet security. Comodo worked well though. worth looking at.
 
I found ZoneAlarm very easy to use. I now use Comodo which I find more complicated than ZoneAlarm. Both work fine.
 
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