Security :: How To Implement Form Authentication Using Cookie Shared By Mulitple Domains
Feb 18, 2011My requirement is multiple domains (not subdomains) share cookie of form authentication
how to implement same?
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Security :: Manually Check Form Authentication Cookie Value?
Feb 18, 2011My requirements is when one other website call my service (httphandler) and in response i will provide one parameter which is
value of form authentication cookie
now that website call my website with that cookie value as query string , how to check from that cookie value that particular use is authenticated or not ?
C# - How To Implement Multiple Login/logout-domains, Single Main Domain In Forms Authentication
Jan 25, 2011i want to have several domains A, B, C where a user can enter his username and password to login to a common main domain D.
So the user goes to A, B or C, enters his username and password, clicks the "login" button, and is then on the main domain D in a logged in/authenticated state. Then the user does the things he wants to do, and then clicks the logout-button and is then returned to the original domain that he came from, be it A, B or C.
What is the best way to do this?
I currently use forms authentication in ASP.NET 4.0 (C#).
Security :: Implement Cookieless Single Sign-on Across Many Domains?
Feb 16, 2011im using visual studio 2008. my requirement is to implement single sign on across many domains without using cookies. is this possible? for example, i have 3 domains (hosted in 3 different systems). www.domain1.com www.domain2.com www.domain3.com and cookies are disabled. i implemented single sign on with cookies, if the sites are hosted in single system then it is working. but it doesnt work if cookies are disabled. i tried all made all possible google searches, but couldnt find anything useful.
View 5 RepliesSecurity :: Integrated Windows Authentication Across Domains?
Jan 27, 2011I've set up an ASP.NET MVC application for my company's Intranet that grabs the user's NT creds via System.Web.HttpContext.User and checks against its own database to perform authentication/authorization.This works just fine on my local machine, and I assume it will also work once deployed to the production server, but the development server is on a different domain than the users. While trying to test the app, Iget prompted for a username and password, which isn't supposed to happen. Worse, entering my login creds still doesn't work. I'm deploying a MVC 2 application to an IIS 6 server.The steps I read to take to get Integrated Windows Authentication to work included putting these lines in my Web.config file:
[Code]....
Then, on IIS in Directory Security uncheck the checkbox that allows anonymous authentication, and make certain that only Windows authentication is checked in the access methods section. I've done these things, but since I'm dealing with cross-domain authentication, it's dead in the water. I tried a Google search, and I'll continue with this, but I haven't found anything yet. I'm not incredibly savy when it comes to domain issues, so I might have seen a possible solution and not recognized it.
Disable Cookie At Browser Level Will 'Form Authentication' Still Work
Mar 30, 2010When i disable cookie at browser level will 'Form authentication' still work ?.If not,What is the alternative that enables the 'From Authentication' ?
View 2 RepliesSecurity :: Asp.net Mvc And Webforms Shared Authentication?
Oct 7, 2010I have few websites based on the WebForms and one based on MVC. All websites have the same settings for forms authentication in web config.The problem is that once logged in to WebForms website, I have to re-login for MVC websites, but when I log out from MVC website, I am automatically logged out from WebForms websites.How can I pass information to the MVC website that user was successfully logged in when using WebForms.
View 1 RepliesSecurity - How To Create An Authentication Cookie
Jan 29, 2010Do we know the algorithm that asp.net uses to create the authentication cookie (when using forms authentication?)
Can we basically create our own copy implementation? if so, how?
What does it use to generate the encrypted cookie value, I know it uses whatever you pass into the SetAuthCookie call (which is usually the userID/username).
Security :: Share Authentication Cookie Between V3.5 And V4.0 Applications
Nov 6, 2010I have a bunch of applications that currently share the authentication cookie in v3.5.
We're in the process of upgrading to 4.0 and also upgrading the applications as a whole. I have 1 done, and would love to deploy it. However, as soon as I do, I lose my sharing of authentication cookie in that application.
In each web.config, my machine key is declared. I removed the actual keys to protect the innocent. :)
<machineKey validationKey="..." decryptionKey="..." validation="SHA1"/>
<authentication mode="Forms">
<!-- DEV Server -->
<forms enableCrossAppRedirects="true" loginUrl="Logon.aspx" name=".COOKIENAMEHERE" protection="All" path="/" slidingExpiration="true" timeout="1440"/>
</authentication>
Security :: Authentication Cookie Expires Too Early?
Jul 6, 2010My users need to stay logged in for 1 day, so I used a persistent authentication cookie with an expiration of 1 day but it still times out after 20 minutes (which is the default timeout for the session, not the cookie).
This is my code:
<authentication mode="Forms">
<forms loginUrl="Login.aspx" protection="All" path="/" />
</authentication>
FormsAuthenticationTicket ticket =
new FormsAuthenticationTicket(1, "username", DateTime.Now, DateTime.Now.AddDays(1), true, "userdata");
string encTicket = FormsAuthentication.Encrypt(ticket);
HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, encTicket);
cookie.Expires = ticket.Expiration;
HttpContext.Current.Response.Cookies.Add(cookie);
I also have manually-generated validation and decryption keys:
<machineKey>
validationKey="......."
decryptionKey="......."
validation="SHA1"
</machineKey>
Security :: Forms Authentication Is Not Updating The Cookie?
Dec 13, 2010We have had a bug recently where users are logging into an application with multiple browser tabs. They are editing a content page which means that they can be working on a page for sometime (ie with no postbacks) They finally click save and because the session has timed out it takes then to login page. I initally resolved they by adding a reminder that the session is about to expire which initally resolved the issue. It has been noted that even when they are within session time out they still got redirected to login page (and loosing the data on the form). We had real problems replicating the issue but have finally managed to do so now and I have learnt some curous features of .net Forms Authentication.
I have set up a test project which has the membership controls on etc. I have set the Timeout on the <forms> tag
<forms loginUrl="~/Account/Login.aspx" timeout="2" />Case 1I then open two browsers windows (side by side), both on the login page (and logged out)On the left window I login (and start a timer)after 40 seconds on the right window I navigate to a page (which takes me to the page as I have logged in on left window )I then wait until the full 2 minutes has elapsed (but before 2 Minutes and 40 seconds) and then try and navigate to a page on the left window.It redirects me to the login pageI would expect it to allow me to navigate to as I have kept my session open on the right window.Case 2I then open two browsers windows (side by side), both on the login page (and logged out)On the left window I login (and start a timer)after 90 seconds on the right window I navigate to a page (which takes me to the page as I have logged in on left window )I then wait until the full 2 minutes has elapsed (but before 2 Minutes and 40 seconds) and then try and navigate to a page on the left window.It Navigates to the page keeping me logged in.After a bit of reading around the subject I have found out that the slidingexpiration property only renews the cookie if it is in the last 50% of the timeout value:
Sliding expiration resets the expiration time for a valid authentication cookie if a request is made and more than half of the timeout interval has elapsed[URL]
My Question is: How can I override this bit of functionality?
Is there a property to set somewhere to "Always renew cookie"?
Is there another workaround. Unfortunately I can't increase the timeout because of a complience issue (it must be set to 15 minutes)
Security :: Retrieve UserName From Authentication Cookie
Feb 5, 2010Once the user has authenticated, I would like to base all of the information displayed to the user based on their username. Isn't that saved in the cookie?
For instance, I would like to pull all of their client information using a GridView and have the parameter set to the appropriate authentication information.
Security :: Keep Authentication Cookie Between Http And Https On Two Different Domain?
Dec 6, 2010is it possible to preserve authentication for ASP.NET Forms authentication cookie,btween Http and Https (different domains) and back?I mean haveing single signon for two domains say http://www.mydomain.com and https://members.mydomain.comI've seen on quite asp.net sites that have a 'MyAccount' section they transfer the site to https and then when you have logged into your account successfully and gone back to the majority of the site you move back to http whilst still being logged in.
View 1 RepliesWCF / ASMX :: How To Implement Form Authentication Service
Nov 1, 2010How to implement form authentication wcf service?
View 1 RepliesSecurity :: Forms Authentication - Users Logged Out Before Cookie Expiration?
Jun 16, 2010For some reason my users are logged out of the system every 10-15 minutes or so...regardless of the configuration below....am I missing something?
[code]....
Security :: Finding Membership Authentication And ASPXAUTH Cookie Size
Oct 31, 2010Without reading the whole text below, since this is on the ASP.Net side ... basically I think I need to know if there is a way to reduce the size of the forms authentication cookie. When using a DotNet 2.0 website, the ASPXAUTH cookie is about 232 bytes ... when using the same source code but upgraded to DotNet 4.0. the cookie is approximately 264 bytes, setting the ticketCompatabilityMode does not reduce the size since I think the default setting is Framework20. I length of the cookie, including the its' name can not be larger than 256 bytes in order to use it with the "Client Application Services".
I only did a cursory search of the asp.net forums, but will dilligently look for an existing solution.
----- BACKGROUND AND RESEARCH -----
I have been using all three features of client application services (authentication, profiles, and roles) in my windows app (DotNet 3.5 framework) for almost two years now. Up until now, I have not had any problems. This week I hit a brick wall and am pretty stumped with two seperate but related issues.
Issues:
In development, we decided to upgrade our websites/services to DotNet 4.0. All applications upgraded successfully. However we are unable to log into our application using Client Application services. No matter what user we use, Membership.ValidateUser returns false. Since we know the username and passwords, we thought this was strange. When debugging the application, we found that Membership.ValidateUser was throwing an InvalidOperationException (see below for complete exception) stating that the ASPXAUTH property was too long, longer that the schema created in the SQL/CE database. (See below for things tried).
In production .. A user all of the sudden could no longer gain access to the application. Upon inspection, his ASPXAUTH cookie was 264 characters long (9 characters longer than the schemas nvarchar(256)). Even though the user was being authenticated on the "server side", and the JSON query returned "{"d":true}", Membership.ValidateUser returned false. Again, as in the case above, the actual error was ...
Message=@PropValue : String truncation: max=256, len=264 ...
I am assuming I am missing something very simple or that I overlooked a settings. In development, this is not a huge issue as I can release the Dotnet 4.0 websites when I am ready. But now that this has happened to a client on a production system, it is very worrisome.
[code]....
Security :: Authentication Cookie Persistance To True On A Aspx Website?
Aug 26, 2010authentication cookie persistance to true on a aspx website,this works great.now I have made an affiliate website (HTML + iframe (same aspx)) and it does not keep my user logged in after closing browser.
View 1 RepliesSecurity :: Forms Authentication Cookie Not Changing Current User Identity
Jan 21, 2010I am having a problem with security in a web application I am building using Visual Web Developer 2008. I am using Forms Authentication:
<authentication mode="Forms">
<forms name=".MYAUTH" timeout="20" enableCrossAppRedirects="true" />
</authentication>
And a SQL Server database with ASP.NET Membership and Roles. I am using the LoginView control with the AnonymousTemplate and LoggedInTemplate to manage the user's interaction with logging in and out. The problem I am having is that I am authenticating the user against the database:
If Membership.ValidateUser(_userName, _txtLoginPass.Text)
Then returns True and:
FormsAuthentication.SetAuthCookie(_userName, False)
sets the cookie correctly:
FormsAuthentication.Decrypt(FormsAuthentication.GetAuthCookie(_userName, False).Values(0))
{System.Web.Security.FormsAuthenticationTicket} CookiePath: "/"
Expiration: #1/21/2010 1:42:27 PM#
Expired: False
IsPersistent: False
IssueDate: #1/21/2010 1:22:27 PM#
Name: "jaymo "
UserData: ""
Version: 2
but when I check
HttpContext.Current.User.Identity.IsAuthenticated it always returns False.
If done this before and it worked fine. I cannot find any mistake I might have made or where something might have changed between ASP.NET 2.0 and 3.5.
Sharing Session Cookie Across Two Named Domains?
Jan 19, 2011I have a .net webapplication with the following domains:
www.domain.com
sub.domain.com
files.domain.com
When a user is logged on to domain.com or sub.domain.com, I'd like them to share session state (i.e. be logged into both domains at once). This is possible to do by setting the domain on the session coookie to be ".domain.com". However, my problem is that the domain "files.domain.com" should not have session state due to security issues (xss attacks from user-made files hosted on that domain is an issue).
Is it possible in ASP.NET to use the same asp.net session id for these two domains, but not the third one?
Security :: Web Farm Using Window Authentication Or Form Authentication?
Aug 9, 2010I have a web farm web project, and want to make sure windows authentication is working well without any problem in web farm, can any one give me some web sites or information about that?
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Sep 2, 2010I needed information regarding the capabilities & integration of AzMan tool with Asp.net.Currently, I got a Sharepoint 2007 website along with ASP.NET 2008 where I am using Form Based Authenication.Now, the requirement is any user within a domain registered in AD should be able to login in website through intranet.
Can I acheive this using AzMan, or I need to create two websites one with FBA for internet users and the other one for the intranet users with AD authenication. Also my intenet website is deployed and in use where usermapping and roles are already created, so using this tool what will be the impact on existing webiste.
Security :: Implement Cookieless Authentication In .net?
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Sep 13, 2010I have one webserver alone in the network and all the users authenticate in another server. I'm trying to implement windows authentication in a application in the webserver, but every time that the page loads a login window appears exactly that the windows client was authenticated in the order server. Is It necessary both server stay in the same domain? Is there another way? Finally, I need to get the user id in the windows client, but webserver and domain server don't communicated between itself.
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