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asp.net security : mixed mode authentication + no postbacks


domagoj@community.nospam
5/13/2008 8:44:02 AM
Hi there

I implemented a mixed mode authentication as follows:
main site using forms authentication
redirector site using windows authentication, creates a forms
authentication cookie and redirects to main site

the problem is if i go to the main site everything works fine

if i go to the redirector site it redirects to the main site ( as
expected, cookie is generated as expected and in site
Context.Current.User is set as expected ) but no postbacks occur
anymore, even if i logout an logon to the main site problem resides, i
figured out that any "redirector" site protected by windows
authentication redirecting to my site causes postbacks to not function
anymore.

I tried the sample from Microsoft Press Book "Developing More-Secure
Microsoft® ASP.NET 2.0 Applications" and same thing happened.

My config Vista SP1 .NET 3.5
or 2003 R2 .NET 3.5

Applications are .NET 2.0 applications

stcheng@online.microsoft.com
5/13/2008 9:58:36 AM
Hi tia,

From your description, you've applied a custom mixed authenitcation in your
ASP.NET web application,and the windows authentication module will generate
forms authentication cookie and redirect user to formsauthentication site.
However, you found that after redirected from windows authenticatino site,
any page postback operation no longer work, correct?

If this is the case, I think the behavior is quite unexpected. As for the
postback not work, do you mean even putting a typical submit button(and
click it) will not cause page to postback? Or if the client-side browser
does perform the postback and server-side didn't show any reflection or
return any response? I'm still not quite sure about the exact result and
behavior when you go through the redirector module and return to main site
pages. Is there any particular error message?

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


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domagoj@community.nospam
5/13/2008 12:47:29 PM
[quoted text, click to view]

correct, no button or any other method to trigger postback works
anymore, ispostback is always false and no viewstate form fiels is sent
to server anymore

i wrote a small webapp with one page and one button, by clicking the
button the app creates a authcookie(always with same information within
it) and redirects to my app, if i set authentication for this app to
forms or none everything works as expected, but if i set the
authentication to windows the problem same as described in my post

i figured out that browser sends the authentication handshakes if
redirect from windows authorized webapp and on every "postback" ist one more

Dominick Baier
5/14/2008 1:13:14 AM
I know the sample from the book you are talking about ;)

The behavior you describe is very unexpected. Do you have another test machine
to verify this?

-----
Dominick Baier (http://www.leastprivilege.com)

Developing More Secure Microsoft ASP.NET 2.0 Applications (http://www.microsoft.com/mspress/books/9989.asp)

[quoted text, click to view]

stcheng@online.microsoft.com
5/14/2008 2:30:38 AM
Thanks for your reply Tia,

#Web Development Helper



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stcheng@online.microsoft.com
5/14/2008 2:36:54 AM
Hi Tia,

You can try the web development helper which can capture http messages
between browser and webserver:

#Web Development Helper
http://projects.nikhilk.net/webdevhelper/

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
msdnmg@microsoft.com.

==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
ications.

==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------
[quoted text, click to view]
stcheng@online.microsoft.com
5/16/2008 10:01:09 AM
Hi tia ,

Have you got any progress on this? If you need any further help, please
feel free to let me know.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
msdnmg@microsoft.com.

==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscriptions/managednewsgroups/default.aspx#notif
ications.
==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.
--------------------
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Dimitrios Toulakis
5/20/2008 5:32:04 AM
Just check the application name value for your applications to match.

br
Dimi T.

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David Sharpe
6/2/2008 7:45:39 PM
David
6/2/2008 8:11:46 PM
What application name where ?

On May 21, 12:32 am, Dimitrios Toulakis
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David
6/2/2008 9:17:37 PM
Oddly this bahaviour ONLY manifests for us if we are developing and
debugging on the same machine, i'e client and server on same machine,
as soon as we run the client from elsewhere we get the postback we
expect !!!!!!! doh !

[quoted text, click to view]
Dimitrios Toulakis
6/2/2008 11:41:00 PM
Sorry,

Im assuming with this answer that you are running your applications in the
IIS.
There you should check the values to match to the corresponding dll....

Example:
Your dll: Foo.dll

Web1 -> WinAuth -> Name: FooWin --> App Name: Foo
Web2 -> FormsAuth -> Name: Foo --> App Name: Foo


br
DT

PS: If you are using the web dev server then I have no clue...

PS2: If you are recompling and the browser window is open, then this happens
sometimes....



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