HW: -1 PC with win7 64bit -1 PC with Vista -1 airport extreme I set a shared folder on my win7 laptop, but can't access it by my vista laptop. Vista PC report following info.: -win7 PC online -windows confirmed vista pc firewall correctly configured -try to allow connections through TCP port 445 I checked win7 pc, both sharing option and firewall setting, file and printer sharing is allowed by both private and public network I think maybe it's due to airport extreme setup, can anyone help? how to 'allow TCP port 445?' thanks!