Ports to be opened with Windows Firewall for SQL clustered instance

Hi

We have 2 SQL 2012 std servers in Windows 2012 R2 cluster with 2 instances. We assigned static ports 1455& 1456 for each instance. So which are the ports that we need to open with Firewall or should we open the service with the firewall. The SSRS is configured on a dedicated server (found one article : http://msdn.microsoft.com/en-in/library/cc646023(v=sql.110).aspx)

Thanks in Advance

LMS