Messaggio di errore: "The RSS webpart does not support authenticated feeds."
Dopo aver inserito in una vostra pagina la RSS Viewer web part ed averla collegata ad un feed RSS Sharepoint potebbe comparire il messaggio seguente:
La motivazione è che la web part Rss Viewer di Moss 2007 supporta solamente accesso anonimo e Autenticazione Kerberos.
Plan secure configurations for Office SharePoint Server features:
http://technet.microsoft.com/en-us/library/cc263399.aspx
RSS Web Part
By default, the RSS Web Part can access only anonymous feeds. To allow authenticated feeds (such as feeds to authenticated SharePoint site content), you must grant the Web server computers access to the appropriate server computers by using constrained delegation in the Active Directory directory service.
Referenze:
Mark Arend : RSS Viewer web part and authenticated feeds:
http://blogs.msdn.com/markarend/archive/2006/10/03/RSS-Viewer-web-part-and-authenticated-feeds.aspx
Tratto dal Blog di Mark Arend:
"In B2, configuring the RSS Viewer web part to display an RSS feed from a MOSS site nearly always worked without difficulty. In B2TR, you may encounter a stubborn error “The RSS webpart does not support authenticated feeds” when trying to display an RSS feed from a MOSS site. The authentication behavior has changed, to match the original design that was not implemented properly in B2. RSS Viewer will now only work with Authenticated feeds (default for MOSS) when the MOSS server is setup with Kerberos authentication. Technical details: In B2, the machine account was used to access the feed; since this account is part of “All Authenticated Users” most feeds just worked. However, use of the machine account was considered to pose a security vulnerability. In B2TR, this was fixed to connect to feeds as anonymous, then delegation support was explicitly added by having ASP.Net negotiate the authentication mechanism."
B2 = Beta 2
B2TR = Beta 2 Technical Refresh
Tales From The Field : Fun with RSS:
http://blogs.technet.com/sharepointdse/archive/2007/04/13/fun-with-rss.aspx
