I have opened up the ports (both router and F-Secure software firewall) necessary to be able to play Half-Life 2 over broadband. How serious a risk does this pose? Has there been a virus written that will exploit these open ports?
Nothing can exploit a port opened in a firewall, it is the services listening on those ports that can be exploited. Your question then is "are there any known vulnerabilities in the Half-Life 2 clietn software?"
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