Connect to Oracle server through Windows firewall

1. Open control panel - windows firewall, add an exception port in the  exception list.  The  default  port number for oracle connection is  1521.
2. Start regedit tool, add a string item under HKey_Local_Machine\Software\Oracle\Home0, set the name of the item is 'Use_Shared_Socket' and the value is 'true'.

That's ok.