Configurable Ports Client to internet (as proxy server settings) Client to reporting point Client to site system Software update point to internet (Proxy server settings) Software update point to WSUS server UnConfigurable Ports Configuration Manager 2007 console to SMS Provider Configuration Manager 2007 console to the Internet Site server to site database server Site server to site system Site system to site database server Site to site (Primary-to-primary or primary-to-secondary)