no problem
this forum would be nothing without questions.
programs/internet traffic communicates via 'ports' - a firewall blocks/closes ports.
all 'residential' routers use NAT + some extra firewall options
but for added security you should enable the firewall locally on your PC
(the funny part is..if you can get to 'the dark stuff' on the 'net - 'the dark stuff' can get to you)
but I digress.. um, you should turn on your software firewall.
If you can't configure the McAfee stuff - turn of its firewall and turn on the default microsoft one.
same difference really
2¢
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