I don't have much experience with ASP.NET and IIS -
But I created some simple web site and i put it on IIS server -
I want to make the access to be only for those users, who are know the access password.
How can I do it ?
You can easily do this with Forms Authentication in asp.net. Take a look at some information on the web about this.
http://msdn.microsoft.com/en-us/library/ff647070.aspx
http://www.codeproject.com/KB/aspnet/ASPDOTNETauthentication.aspx
http://msdn.microsoft.com/en-us/library/7t6b43z4.aspx
It is pretty easy to get this working, most of the work is in the web.config and it gives you a lot of control about what pages are secure and what pages are not.
Related
For my new website, I am using a custom login.aspx (simply two text boxes username and password with a button). Actually I don't know about authentication modes in ASP.NET. Do I need to specify any mode in my web.config?
What are the security issues related to this?
Any links to articles related to this will be appreciated.
Have a look at ASP.NET Identity. This is the way to handle authentication/authorization in ASP.NET these days.
Start reading the introduction on the asp.net site and a lot of thing will become clear.
Just a login.aspx page will bring you nothing, since there's a lot more involved then just username/password checking. You need to store usernames/passwords, encrypt things, handle cookies (persistent or not), handle autorization, maybe some registration or roles etc etc.
All this things can be done with ASP.NET identity. If it's a new website, in VS2013, Individual User Accounts authentication is on by default when creating a new ASP.NET web project. There's a lot of boilerplate code in the project template to get you up and running...
http://asp.net/identity
Anyway thanks for your suggestion. I am using 'Scrypt' based hashing. Form authentication seems easy but its difficult for me to manage cookies, user tables etc. I use User table for many other purpose also.
This method gives me a good control over everything even if its difficult to get coded.
I have am asp.net 3.5 web site with a asmx web service and a test aspx page (the page tests the web service using javascript).
I need to run this site with anonymous authentication, so I setup the site in IIS as such.
Now, if I am trying to open the test page in the browser, I get 401.3-Unauthorized error.
Any ideas what should I do to fix it? Do I have to give read access for the physical file to Anonymous Login?
Also, what version of IIS are you using? Also if you are using the IIS mgr and you check anonymous authentication, you need to give it a valid username and password, have you done this?
A 403 can mean several things. It can mean you don't have authentication correctly configured, or it can mean that the ASP.NET worker process does not have rights to access the pages (the security is set to only allow you to access them, for instance). There are other scenarios as well, but these are the two most common.
I'm working on adding a new webapp to an existing website. I've been directed to write the webapp in ASP.NET. The existing website is written in ColdFusion. For the most part, the ASP.NET webapp is completely stand-alone, but it needs to interact with the ColdFusion code in one important way - if somebody logs in to the ColdFusion site, we don't want them to have to log in again when visiting an ASP.NET page.
When someone logs in to the ColdFusion site, their username is stored in a cookie, along with a login token that can be looked up in our database. My .NET is a little rusty, so I'm having trouble visualizing how the ASP.NET code should use this data. I've already written a simple MembershipProvider that can be used to log in/out out the ASP.NET app using the data in our existing database tables, which are shared with the ColdFusion code.
What I'd like to know is - how can I make sure the ASP.NET app detects the cookies set by the ColdFusion app (I imagine they'd be sent to the ASP.NET pages, since everything is hosted on one domain), and automatically logs the user in using the MembershipProvider and Forms Authentication, using the credentials supplied in the cookie? I'm thinking that putting some kind of cookie check and log in function in the Global.asax file, set to run every page load for every page... but that seems kind of clunky. Also, do people still use the Global.asax file anyway? I had thought there was a more modern method.... Also, how can I manually log someone in using Forms Authentication and a custom membership provider? Currently my code allows the user to log in using the provided login control, but I'm not sure how to log the user in without them having to do anything.
Thanks in advance for any help. Looking over the MembershipProvider tutorials and the MSDN documentation it seems to me like the answer should be staring me in the face, but for some reason I just can't see it. Maybe not enough coffee....
Not sure if this is what you're looking for:
FormsAuthentication.SetAuthCookie("the username goes here",false);
Reference
I'm a CF developer ususally, but we had to do some integration with a .NET application recently and the way we approached it was to keep the CF and .NET sessions separate but ensure that login happened on both so when the user moved from one to the other they were still logged in.
So is there perhaps a way for you to hit your ASP.NET application with a request to login a user when you login using the CF application? Perhaps you could have an iframe on the page that you can load when the CF login is complete that holds a login service for the .NET app?
This way you would not need to worry about one app server reading the other app server's cookies, instead there would be two sets of cookies, one for ASP and one for CF.
Hope that helps!
The way I would approach it, is I would have a specific page that acts as a liaison between the CF and .NET layer. That page would implement your business layer and just check to see if the Cookie is there, if so read it in, do the lookup and login the user or whatever business logic that needs to be done. How would you accomplish the login/authentication, well that’s all based on your login/authentication code.
The only link I can offer is the basic of cookies in ASP.net
http://msdn.microsoft.com/en-us/library/aa289495(v=vs.71).aspx
Edit: found another link that might be helpful.
http://www.aspnettutorials.com/tutorials/network/cookies-csharp.aspx
Here's my situation. I have a DotNetNuke application. I want to link to an existing ASP.net website from within the DNN website, and have decided to use DNN's IFrame for that.
The existing ASP.net application uses Forms Authentication for security - only authorized users can access the pages. This asp.net application also requires user roles for authorization to different pages.
I don't want users to have to sign on twice, and I'd like the asp.net page to use the user membership and role data from the DNN application - it shouldn't require it's own membership database.
Is this possible? According to the MSDN website:
"ASP.NET supports forms authentication in a distributed environment, either across applications on a single server or in a Web farm. When forms authentication is enabled across multiple ASP.NET applications, users are not required to re-authenticate when switching between the applications."
Does this apply to DotNetNuke applications linking to asp.net applications? Both are on the same domain, too.
(I tried modifying the config.web of the asp.net page to work with the DNN config.web, matching machine keys and forms settings - but it didn't work. I could be doing something wrong, but before I pursue, I want to know if it's even possible.)
Thanks for any help!
I don't know if what you're talking about is possible within DNN. We're on DNN 4.0 and they do some weird things with the ASP.NET membership tables which may cause trouble.
What I can tell you is an alternative way (assuming you have control over the ASP.NET application). There is a project called MADAM (Mixed Authentication Disposition ASP.NET Modules - I know a bit of a mouthful) that can be used to provide a method other than forms authentication for application logon.
What you could do is set MADAM up on your ASP.NET application and from DNN pass user credentials to the ASP.NET application. The end result appears to the user as single sign on.
If you need me to elaborate on anything, let me know in the comments.
Actually i am displaying some aspx pages in a iframe module present on a dnn page. Now since inside the iFrame i am displaying aspx pages hosted elsewhere but on same server. I am just want to authenticate the dnn logged-in user before loading the page inside iFrame.
Do dnn provide any API which i can call from apsx pages hosted elsewhere in order to restrict access to ony unauthorized user.
I am creating a standalone asp.net page that needs to be embedded into a sharepoint site using the Page Viewer Web Part. The asp.net page is published to the same server on a different port, giving me the URL to embed.
The requirement is that after a user is authenticated using Sharepoint authentication, they navigate to a page containing the asp.net web part for more options.
What I need to do from this asp.net page is query Sharepoint for the currently authenticated username, then display this on the page from the asp.net code.
This all works fine when I debug the application from VS, but when published and displayed though Sharepoint, I always get NULL as the user.
Any suggestions on the best way to get this to work would be much appreciated.
If you want to retrieve the currently authenticated user from the SharePoint context, you need to remain within the SharePoint context. This means hosting your custom web application within SharePoint (see http://msdn.microsoft.com/en-us/library/cc297200.aspx). Then from your custom application reference Microsoft.SharePoint and use the SPContext object to retrieve the user name. For example:
SPContext.Current.Web.CurrentUser.LoginName
You can still use the Page Viewer Web Part to reference the URL of the site, now located within the SharePoint context.
Thanks heaps for the answers!
Turns out that as long as the asp.net page is using the same URL and port as the Sharepoint site, authentication works across both sites.
The solution is to use a Virtual Directory inside of the sharepoint site and install the asp.net page there.
When it works in debug, is that being used in SharePoint?
Your page and the Sharepoint site might as well be on different servers as far as authentication is concerned -- in order to get the information over you might need to pass it via the QueryString from the webpart if you can -- or you might need to make your own webpart to do this (just put an IFRAME in the part with the src set to your page with the QueryString passing the username).
It does seem that this would be a security issue if you use the name for anything though -- if you are just displaying it, then it's probably fine.
If you actually need to be authenticated, you might need to add authentication into the web.config of the site hosting your standalone page.
edit: I think you'd have better luck putting your page on the same port and server as SharePoint.
I suspect you will have a hard time specifically querying SharePoint for the currently authenticated username. I can't think of a way to easily access the SharePoint context from a separate web application like you are describing.
I don't know what kind of authentication scheme you are using, but you may want to consider using Kerberos, as I've found that it can make these kinds of scenarios a little easier by allowing for delegation and passing credentials from application to application or server to server.