If you've played around a bit with Windows Firewall and perhaps allowed connections that you should not have, you can get back to a known, secure state by clicking Restore Defaults in Windows Firewall. Be aware that doing so removes all rules that you've added for all programs . Although this gives you a secure setup, you might find that some of your network-connected programs no longer work properly. As that occurs, you can re-add each legitimate program that needs to be allowed, as described on the previous pages.
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