06-24-2023, 02:09 AM
By default firewalls allow connections that they initiated to receive responses, even if the port it uses is not "open". 80 and 443 are standard HTTP/HTTPS, which would be the initial data load on opening battle.net just like loading a standard webpage. Any ports where this is not the case, as battle.net and games will use different ports for different purposes, gets handled under Universal Plug and Play to not require manual port forwarding.
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