Secure Communication between SAP R/3 and SAP portal(WAS Java)

Hi All,
   We have a requirement where client says ,there needs to be a  SSL tunnel established between SAP R/3 and Portal(through ITS) to access R/3 through portal
Do we have to use SSL for that or SNC?I heard SNC is a mechanism which have to be used here since it uses DIAG protocol to connect but not Http.Is it true?Kindly give some more ideas on this.
Other thing is to do this they need to open a port between for using Firewall.Can you guide which SAP port has to be open for this connection?
Thanks In Advance
Regards
Rani A

Hi Rani,
what the ITS Admin is, is explained in the docs to the <a href="http://help.sap.com/saphelp_nw04/helpdata/en/44/28611e0bd26493e10000000a1553f7/frameset.htm">ITS Admin Tool</a>. This also includes how to access it.
Usually specifiying the ABAP backend is done by maintaining the <a href="http://help.sap.com/saphelp_nw04/helpdata/en/44/2b67fe369b060ae10000000a155369/frameset.htm">Global Service File Parameters</a>.
The <a href="http://help.sap.com/saphelp_nw04/helpdata/en/44/2aa8081a3a060ae10000000a155369/frameset.htm">SNC configuration</a> is part of the <a href="http://help.sap.com/saphelp_nw04/helpdata/en/44/2a95a61a3a060ae10000000a155369/frameset.htm">Security Configuration</a> and also done in the ADM instance of the ITS.
Regards,
Patrick

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