Port 80 for MSN games with McAfee

I had difficulty playing on line MSN games most likely due to Mc Afee's
blocking port 80. After adding port 80 in Mc Afee Security Center program,
it works lots better. I am able to access MSN Games most of the time.

The question is not clear why I have to add port 80 to my Mc Afee program
since i have been successfully connect to various popular links: Yahoo,
Google Ebay with no problems. They are at port 80. Why do I have to notify
my Mc Afee to open port 80 for MSN games while I never need to notify the
program about port 80 for Yahoo, Google?





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