hi, i like to share an interesting issue that i had few days ago. i was tried to publish sharepoint portal with ISA Server 2006 (via the wizard) everything just worked well except one thing, when user connect into the portal through WAN connection, gives user and password authentication to the Form Based Authentication and get in to the portal, somthing very strange happens.
The issue was when user try to open Office document (only office, with files like PDF it works just fine) he have to reauthenticate over and over again as long as he try to open new files from the portal.
i have spend some time trying googling this, and found few lines:
first, i saw this note in TechNet under "Deploying Office SharePoint Server 2007 with ISA Server 2006" :
| Configure persistent cookies to allow users to open documents from an Office SharePoint Server site without the need for the user to reauthenticate. The following security issues relate to the use of persistent cookies: |
for the full reference: http://technet.microsoft.com/en-us/library/cc268368.aspx
Actually you can configure this persistent cookies on the client side or on the ISA server side, i tried them both and configure this persistent cookies on the ISA Server has solved the issue for me, follow those steps to configure it on ISA 2006 Server :
1. open ISA console and publish your Sharepoint 2007 Portal (if you dont know how refer to this manual: http://technet.microsoft.com/en-us/library/cc268368.aspx)
2. after you have published the portal and you able to access it from WAN connection, return to your ISA console and double click the listener that you have created through the publishing process.
3. inside the listener window click Forms Tab and Click the Advanced... Button

4. Now, Under "Use Persistent Cookies:" choose: "On all Computer"

5. Click OK and apply the new configuration in the ISA 2006 Console.
that's all, now you able to access office documents from WAN connection without the need of reauthenticate over and over again.
oshri.