RPC over HTTPs porte

det burde ikke være nødvendigt

http://www.petri.co.il/testing_rpc_over_http_connection.htm

RPC over HTTP/S is a cool method for connecting your Outlook 2003 client to the corporate Exchange Server 2003 from the Internet or WAN, without the need to establish a VPN session to the corporate LAN and/or needing to open many ports on your corporate firewall. The only ports you'll need to open on your firewall are TCP 80 and, if using SSL, TCP 443.

med mindre din firewall er en simpel pakke filtrerings router og så er du jo nødt til at åbne alle porte over 1024 for at kunne få svar tilbage (dette gælder dog ike hvis din pakke filtrerings router holder state)