Security :: NT Authentication Fails Redirect To Default Page
Dec 16, 2010
I am in the process of designing application in case user authentication if failed i need to redirect to default page (NT Authentication). Is there any way you can redirect the user on IIS if the user is fail go through the NT authenticaiton at IIS level.Options 1 : Always land the user to defalut page and validate there and redirect to site based on the access give the directory level access. I am looking if there any options to let the user to default page in case user access is denied.
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Aug 12, 2010
we would like to redirect the user to a given page if the authentication to our SharePoint site fails (i.e. the standard windows login prompt pops up three times - we are using windows authentication). No matter what option we try it always ends up bringing the user back to a blank page.
We have tried writing a HttpModule (and catch the if Response.StatusCode = 401), which doesn't seem to fire any events if the user is not authenticated. We have tried writing a HttpHandler, but of course we can redirect the user if there is an error code but can't continue onto the desired site if not. We have tried doing the following in the web.config:
<customErrors mode="Off">
<error statusCode="401" redirect="http://social.msdn.microsoft.com"/>
</customErrors>
Which doesn't work, again taking us to a blank page.
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Jun 29, 2010
In asp.net we specify the redirect url when using forms authentications like this:
<authentication mode="Forms">
<forms name="myApp" loginUrl="Login.aspx" protection="All" defaultUrl="default.aspx" path="/" requireSSL="false"/>
</authentication>
this means that when a user log in, will be redirected to "default.aspx" using this method
FormsAuthentication.RedirectFromLoginPage(IDTextBox.Text, RememberCheckBox.Checked);
Now is it possible to make the user choose which page to be redirected to prior to login? for example the user chooses from a list the page to login to prior to login then when authenticated be redirected to this page instead of the default.aspx page. is that possible and if so how can this be done?
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May 14, 2010
I would like to redirect the user to default page if he tries to copy paste an URL to browser. Like if i copy the url [URL] and paste it in the browser it should refirect me to default page.
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Mar 30, 2011
I have a logon/register control that is on several pages. Users are logged on with code: - FormsAuthentication.SetAuthCookie(Userid, False) Response.Redirect(Request.Url.AbsoluteUri) ' Round trip is necessary to complete logon
All this was working OK, except that there was a problem with Internet Explorer users: if their browser had the default privacy setting the authorization cookie was rejected. There was no message, but they were not logged on. See [URL] To try to solve this problem I changed to cookieless authentication, but now the logon control doesn't work. The problem is that after cookieless authentication the URL changes from
[URL]
However Request.Url.AbsoluteUri remains http://localhost:3641/TestGDB/login_pages/home2.aspx even after the logon, and so with cookieless authentication the user is not logged on as there is no authentication ticket in the redirect URL.
The problem is "solved" by changing the Redirect statement to Response.Redirect("~/login_pages/home2.aspx") which works perfectly for this particular page, but is obviously wrong when the control is on other pages.
How do I write "Response.Redirect(current page)"?
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Jan 26, 2010
I created a mixed mode authentication mechanism based on a few of the articles that I have read on this topic. It's similar to something like this: [URL]
Basically, there are two web applications. One accepts the Windows Auth and one accepts Forms Auth. The Windows Auth then creates a forms auth ticket and passes control to the Forms auth application. This solution works fine when both applications are housed within the same IIS web site.
Now, order to control the security of this solution we set up multiple IIS web sites on the same machine. Web Site 1 serves external traffic (forms auth) and Web Site 2 serves internal traffic (windows auth).
So the design is that an internal user can hit the site using Windows auth via a internal name (myserver) while the external users use Forms Auth hitting [URL].
All that said, the solution works when the two applications are in the same site. Doesn't work when they are in different sites.
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Mar 21, 2011
While running an app from the server where it is deployed the website works fine, however when trying to access it from a different machine(placed in same network), using the same credentials, it shows that I am not an authenticated user.
[code]....
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Oct 5, 2010
I am trying to implement a simple role based authorization using forms authentication in ASP.net. It works perfectly fine in my local system but fails when I deploy in production (shared hosting). Whenever I try to log in, rather than taking me to the default page in specified directory it throws me back to the login page. I suspect that there is some issues with the configuration but not sure where the problem is. The code is provided below:
Web.config (root):
[Code]....
Web.config (Member directory):
[Code]....
Login.aspx:
[Code]....
Global.asax:
[Code]....
Works fine in local machine but shared hosting is not taking the authenticated user to the pages inside the secured folders. What can be the issue?
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Oct 18, 2010
Just to describe the scenario. I have a website. This lives on a webserver. On that webserver is an SQL server. The website connects to this database using windows authentication. I have written a windows form application that connects to the SQL Server on the webserver. This application is being run from a location on out intranet. The Winform application use SQL authentication to connect to the database. The SQL Server didn't have mix mode authentication enabled. So I enabled it. The winform application could now connect to the SQL Server.
This is where it starts getting a little strange.
The Website that was already connecting find using integrated authentication starts failing with:
Login failed for user 'NT AUTHORITYNETWORK SERVICE'
When you are enabling mixed mode authentication, you are adding another authentication method, why would the original Windows authentication fail?
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Nov 9, 2010
sir when any connction or error or exception generated in a page then control will go to where(which section)in the web.config file. i have to create a page when any exception or error or connection fails occurs from that it will redirect to login page so what code i have to write under web.config file pl tell me?
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Feb 2, 2010
I am using ASP.Net's forms authentication, but do not want the default behavior of redirecting to a login page when a restricted area is accessed. Instead I would like to invoke a javascript JQuery dialog for the login on the current page, preventing the content behind from loading.My only issue is that by default the forms authentication wants to redirect. Is there a handler that I can hook into, or some other option to prevent the redirect?
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Mar 10, 2010
I am currently having a spot of bother in something im trying to create. I want it so when a user who is in a certain role logs in they are directed to a certain page, and any other normal users are directed to another page.
I think i have this sorted via code but...
-The first time it will work, the 'admin' user will get directed to the appropriate page
-I then log out and log in as a normal user and get directed to the appropriate page
-then when i log out of that users account and back into the admin one i get directed to the normal users page instead.
-additional to this, I tried it on a different machine logging in as the admin user only to be redirected to the normal users page (is my session being stored somewhere?)
Ive traced through the problem and the user name and password being subbmitted are what they should be, yet it skips the true part of my IF statement for being in that role.
Here is my code I am using on the login form:
[Code]....
-When stepping through if seen it work and not work with the same values, I cant understand the logic of its inconsistency
the code i am using for the logout is (this is on my masterpage):
[Code]....
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Apr 1, 2010
We are developing an application which having two login pages. The problem now is that in the session timeout, the page is redirected to one page which is given in the config file. Is there is any way we can customize the way in which it should redirect to which page depending upon the page where the session timeout is happening.
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Jul 12, 2010
We just switched to VS2010 and seems like the forms authentication is behaving differently.
Our setup is that we have a default page (default.aspx) so that if you link to the root folder of the site, rather than a specific page, you get switched to default.aspx.
In addition, we have a working forms authentication system set up so that if you try to go to any of the pages you get redirected to a login.aspx page.
The login page can either redirect you to the forms authentication default page (default.aspx) or to the requested URL.
I'm not the one that configured this originally, but it looks like we are getting the originally requested URL from the authentication redirect, since Page.Request.Url = "http://.../Login.aspx/ReturnURL=<requestedpage>"
The problem is that this is failing to work when the original url is the root folder. In VS2008, <requestedpage> would be "/rootfolder/default.aspx", whereas now (in VS2010) we're getting "/rootfolder/". In other words, the site redirect used to be happening before the authentication check, and now it seems to be happening afterwards.
This is a problem because when we are checking to see if we need to redirect to something other than the default page, we check to see if the return URL is empty or matches the authentication defaultURL (which is also "default.aspx". If it matches, we go straight to the default page. If it doesn't we do some processing and then do the redirect. The extra processing is producing strange results when the browser is redirected to the rootfolder and therefore to the default page.
For now, I'm able to additionally test for Request + "default.aspx" (which resolved to the authenticaiton defaultURL), but this feels clunky and I can see headaches in the future if we ever need to rename default.aspx.
P.S. It has occurred to me that it's possible that something changed in web.config or another setup file when we did our conversion to VS2010. I can't find it, but that doesn't mean it's not there.
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Jun 4, 2010
I have a web application that is using siteminder for authentication.
I want to redirect to application that is siteminder enabled. This application might be using site minder forms authentication.
What parameters i need to pass to that application? And what details i will need of that application.
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Nov 3, 2010
how to redirect to a custom URL on Forms Authentication timeout? The timeout is working but it is only caught when I try to go to a page in my application because each Page_Load method is wrapped in a custom IsLoggedIn method. Here is the settings I have so far in the Web.config.
[Code]....
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Apr 9, 2010
Here's my scenario.
I've got a site called domain.com and also another product on product.domain.com. The product.domain.com requires authentication to access it. For consistancy in the user experience I have set the login url in the web.config on product.domain.com to be http://domain.com/Login.aspx. This redirection is working ok - and a sample url would be:
http://domain.com/Login.aspx?RedirectURL=/default.aspx
The problem is that the RedirectURL does not take into account that the request originally came from product.domain.com so when the authentication is successful the user is not redirected back to product.domain.com
I have come up with a solution for this but would like feedback if possible.
I changed the loginURL in the web.config to http://domain.com/Login.aspx?domain=product.domain.com so the sample url is now:
http://domain.com/Login.aspx?domain=product.domain.com&ReturnURL=Default.aspx
I then override the LoggedIn event in the membership control and check to see if the domain value pair is specified and if it is I redirect to the domain + ReturnURL.
As I said previously i'd appreciate any comments or other ways to achieve the same result.
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Mar 7, 2011
I am using forms authentication to authenticate users. Application has multiple folders and one of the folders has its own web.config
[Code]....
I want to redirect the user to "info.aspx" instead of "login.aspx"Root has the following web config
[Code]....
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May 28, 2010
I want to redirect my Javascript and CSS URLs to Homepage(Default.aspx) by web.config or via anyother way in ASP.Net. I tried to try it but I can't able to do this thing. I have already checkout ASP.Net professional book but I can't get any reference for it anywhere.
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Apr 1, 2010
We're developping an application that uses forms authentication and URL rewriting (www.urlrewriter.net). In order to make extension-less URL rewriting possible we had to add a default application mapping for the asp.net aspnet_isapi.dll.
The problem we're experiencing now is that when the website is accessed by http://www.myapp.com/ then the aspnet_isapi.dll gets the request and forms authentication forwards it to our login site, so the user gets redirected to http://www.myapp.com/login.aspx?ReturnUrl=%2f instead of having default.aspx displayed (which is allowed to anyone).
Here's the part of web.config dealing with forms auth:
<system.web>
<authorization>
<deny users="?"/>
<allow users="*" />
</authorization>
<authentication mode="Forms" >
<forms slidingExpiration="true" cookieless="UseCookies" defaultUrl="default.aspx" loginUrl="default.aspx" name="gzfb_site_test" timeout="525600"></forms>
</authentication>
</system.web>
<location path="default.aspx">
<system.web>
<authorization>
<allow users="*"/>
</authorization>
</system.web>
</location>
I did quite some research on this problem but didn't find any solution. Is this scenario possible at all, or does default application mapping and forms auth using <deny users="?"/> interfere by design?
P.S. the problems only manifest when running on IIS 6, the ASP.net Development Server handles it without any problems
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Mar 29, 2011
I have a web application (intranet based) which uses Windows Authentication. Unfortunately there are public computers that have public logins at some company locations. My web app doesn't support these public logins because I need to know the user workingSo, even though these public users are windows authentication users, my app will fail because I have no user account setup for that particular account. I want to then try Active Directory Authentication.In my Default.aspx.cs I'd have something like this
protected void Page_Load(object sender, EventArgs e)
{try
userContext = new UserContext(); // If the authenticated user isn't a user in my system then throw an exception
}
[code]...
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Feb 4, 2010
IIS6, ASP.NET 2.0, No Forms Authentication I'm calling Response.Redirect("~/foo.aspx"), but the default document ("Default.aspx") for my site is appearing. To make matters worse, it only happens intermittently. Sometimes the redirect displays the right page.
I've checked session state, and I don't see any values in the web.config (that is, I'm assuming I'm using the 20-minute defaults).
There's foo.aspx and foo2.aspx (and the default document, Default.aspx). All pages extend from BasePage, which extends Page.
BasePage has a property named ReturnPage:
protected string ReturnPage {
get {
if (Session["ReturnPage"] == null) {
Session["ReturnPage"] = "";
}
return Session["ReturnPage"].ToString();
}
set { Session["ReturnPage"] = value; }
}
Users click on a LinkButton on foo.aspx, and the click event handler ends with two lines of code:
ReturnPage = ResolveUrl("~/foo.aspx");
Response.Redirect(ResolveUrl("~/foo2.aspx"));
The Page_Load of foo2.aspx has problems, and its error handling calls Response.Redirect(ReturnPage).
When I view the response headers of foo2.aspx, the 302 location is string.Empty (that is, there isn't one). That same response header has the same ASP.NET Session ID as the response of foo.aspx.
And remember -- this is intermittent. Sometimes, you can click on that LinkButton and go effortlessly to foo2.aspx, no problem. You can process the click with the exact same data once, and it will fail. You'll navigate from the default document (Default.aspx, where you were sent by the "bug") back to foo.aspx, click again with the same data (the same row in the grid/table -- the same LinkButton, essentially), and you'll be redirected to foo2.aspx without issue.
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Jul 17, 2015
I have created an order checkout page.when i click checkout button then it check user login or not if not then it redirect to login page .after login i want to show
my previous link page
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Dec 2, 2010
I have an ASP.NET 3.5 intranet website which has a default page with a menu and when the user clicks on a menu item, I display the page for that menu item in an iframe embedded within the default page. but if the user types the URL of a page directly in the browser, then I would like to redirect him to the default page, because all the content pages do not have a menu. (Master Pages will solve this issue, but I can't use Master page here for a reason and don't want to go into those details). how to find out if user has arrived at the page directly by typing the URL or by clicking on the menu item, so that I can decide whether to redirect or not? Is this possible to find out? btw this is an intranet site and no login is required.
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Feb 12, 2011
When I tested web site on SEO Tools in IIS7 I get this SEO Error: The page contains multiple canonical formats. The page with URL "[URL]" can also be accessed by using URL "[URL]".Search engines identify unique pages by using URLs. When a single page can be accessed by using any one of multiple URLs, a search engine assumes that there are multiple unique pages. Use a single URL to reference a page to prevent dilution of page relevance. You can prevent dilution by following a standard URL format.
Recommended action: Pick a canonical URL format for your site and then ensure that all the links in your site follow that format. (For example, always use lowercase letters.) If an external link that points to your site does not use the canonical URL format, use permanent HTTP redirection to redirect site visitors and search engines to a canonical equivalent of that URL.
I tried to solve this by redirect page to a default.aspx. The problem is that HttpContext.Current.Request.Url.ToString(), always shows [URL] So I can't detect if url typed in browser is only [URL] or [URL] I know that that can be solved in IIS7, but I can't access it to do that in hosting server. Is any solution in ASP.NET to redirect to default page any time when in browser is typed only domain name?
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