Authenticate User In Web Services?

Dec 22, 2010

How can we authenticate user in web services like i want that a user with valid id and password should only be able to consume my web service.

i am using .net framework 2.0

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How To Authenticate A Windows Mobile Client Calling Web Services In Web App

Mar 21, 2010

I have a fairly complex business application written in ASP.NET that is deployed on a hosted server. The site uses Forms Authentication, and there are about a dozen different roles defined. Employees and customers are both users of the application.

Now I have the requirement to develop a Windows Mobile client for the application that allows a very specialized set of tasks to be performed from a device, as opposed to a browser on a laptop. The client wants to increase productivity with this measure. Only employees will use this application.

I feel that it would make sense to re-use the security infrastructure that is already in place. The client does not need offline capability.

My thought is to deploy a set of web services to a folder of the existing site that only the new role "web service" has access to, and to use Forms Authentication (from a Windows Mobile 5/.Net 3.5 client).

I did see this question and I am aware of the limitations that Forms Authentication poses. Since security is not my primary motivator (I use SSL and can restrict access by IP address), but rather using existing user accounts and roles, my decision tree is somewhat different as well.

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WCF / ASMX :: Web Services: To Authenticate Sign Client Assembly?

Jul 21, 2010

I have an application that exposes a number of ASP.NET web services at an internet location. For security reasons, I want to be able to authenticate clients, and reject any that are not authorised. The authorised clients in question will be ASP.NET web applications,
but I do not have guaranteed access to their IIS configuration, nor to their local certificate stores, therefore the solution must not involve any of these items.

However, authorised clients, will always make calls to the web services using wrapper methods provided by an assembly that I
do have control over. My idea is to digitally sign that assembly, and use that signature as the basis for authenticating the client.For that to work, the assembly will need to be able to construct an X509Certificate object from itself, and to attach it to the call to the web service:

X509Certificate cert = X509Certificate.CreateFromSignedFile(Assembly.GetExecutingAssembly().Location);

Then the web service must be able to compare the incoming request certificate to its own signing certificate to authenticate the client:

X509Certificate requestCert = new X509Certificate(Context.Request.ClientCertificate.Certificate);
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The documentation for the method doesn't help much, other than remarking that ASN.1 DER is the only certificate format supported by the method. if I am signing the assembly incorrectly, misunderstanding the method itself etc.? Or more generally if the approach I am taking will work or is flawed?

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Authenticate User Between ASP And WCF?

Feb 19, 2010

We are developing a browser based intranet application. All users have active directory account, so obvious choice would be use Integrated Windows Authentication. But there will be multiple users accessing same client machine so we decided to use form based authentication (but authenticated against AD). In this scenario what is the best way to authenticate between my ASP.NET application (IIS) and WCF Services (another server IIS 7). I don't want to use asp.Net Compatibility mode or certificate. I am thinking to create another domain account to authenticate ASP.NET and WCF. I am also passing the information about the current ASP.NET user to WCF as header info. Is this the right way to do? The following code will call from ASP.NET to access and get each service method.

// Call WCF service from ASP.NET Application using a new domain account for each call.
proxy.ClientCredentials.Windows.ClientCredential.Domain = "mydomain";
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Is there any better way to authenticate WCF from ASP.NET?

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IE8 User Can't Authenticate With Web Service?

Jun 8, 2010

I have an app. It has a page that requires authentication. The authenticated user can view the page because he/she is authenticated. The page makes a jQuery Ajax call to a WCF service. The WCF service checks that the user is authenticated via HttpContext. I have a user that is using WinXP and IE8. This user can authenticate to the page, but when the Ajax call is made from the page to the wb service, the user recieves my "session not authenticated" message on the page, generated by the service and displayed on the page. When I use the same OS/browser combo, the page and service work just fine, as expected; no errors.

What option in this user's IE settings would cause this behavior?

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Security :: How To Authenticate User With Password

Dec 14, 2010

Im building a home page where logged in users shall buy products. To be able to get to the buy page the user already has to be logged in. But when he shall execute the buy he has to reenter his password again to check the user a second time. How do I check if his entered password matches his user password? Im using the ASP Membership library and I have passwordFormat="Hashed".

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Where In The Web Forms Lifecycle Can Re-authenticate A User

Jan 15, 2010

Here's the situation - Most of this ASP.NET Web Forms application (which uses a single master page for all pages) with Forms Authentication, has a standard session timeout, but there are some "modes" where we store an encoded cookie that links the user to their account.

I would like to manually check early on in the page lifecycle for the cookie, and if certain conditions are met, manually re-establish the user's authentication ticket/session.

Where's the best place to do this? Master page Page_Init? Global.asax BeginRequest?

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Sharepoint AD User Authenticate To Another Domain?

Jun 11, 2010

I have a situation where I have to autheticate SharePoint user to another website that is not part of the sharepoint domain without asking user to login again.

I have sharepoint part of domain1. I have users in domain1 that log into sharepoint using NTLM by authenticating to domain1. I don't have any control over this domain and sharepoint configuration. I am working on a application which needs to authenticate users from domain1 without prompting users for login if they have already logged into sharepoint server.

I may be able to install a webpart on the Sharepoint if this allows me to do single sign on between sharepoint and my application.

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How To Authenticate A User To Consume A Web Service Programmatically

Feb 2, 2010

I have a web service set up on an IIS server. When I navigate to the page in a web browser it asks me for my user name an password, as desired. However I want to consume the service in a .NET application (C#). What do I need to do to provide a user name and password programmatically so that I can consume the service? Or is there some other way I should be authenticating a user?

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Security :: Authenticate User By Using FormsAuthentication.SetAuthCookie?

Mar 12, 2010

I Need to Authenticate a User by using FormsAuthentication.SetAuthCookie and Check User is Authenticated in Another page Load How to Do this anyone?

Login Page

if (txtuname.Text == "mike")
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Welcome Page

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Security :: Authenticate User Logged In One Website And Redirect To Other?

Apr 8, 2010

i want to interlink between 2 applications of mine.. suppose a user has logged in one of my application and me store his username and password in cookies...nd nw i want to use those values in the cookies to log-in in other website without entering the username and password again for the other website. i mean to i want to skip the login page of other website.

protected void btnclick_Click(object sender, EventArgs e)
HttpCookie username = new HttpCookie("UserName", "a");
HttpCookie password = new HttpCookie("Password", "a");
Response.Cookies["UserName"].Expires = DateTime.Now.AddHours(1);
Response.Cookies["Password"].Expires = DateTime.Now.AddHours(1);

this is the code for storing values in cookie on click of a button. nw in 2nd application on page load i am using this code.

HttpCookie userName = Request.Cookies.Get("UserName");
HttpCookie password = Request.Cookies.Get("Password");
if (userName != null && password != null)
if (Membership.ValidateUser(userName.Value, password.Value))
FormsAuthentication.RedirectFromLoginPage(userName.Value, false);

here m able to get the username nd password but don't how to validate that username and password so that i can skip the login page of this application..m not sure about the code in BOLD above if its rite or worng.. and for Login i am using ASP login Control
in both applications.

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Security :: Authenticate User Using The Central Authentication Service?

Mar 25, 2010

how to authenticate a user using the central authentication service?

I created a login page to enter the user name etc. I have the server for the authentication.

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C# - Authenticate Against A Local Windows User On Another Machine In An Application?

May 24, 2010

In my ASP.NET application, I need to be able to authenticate/authorise against local Windows users/groups (ie. not Active Directory) on a different machine, as well as be able to change the passwords of said remote local Windows accounts.

Yes, I know Active Directory is built for this sort of thing, but unfortunately the higher ups have decreed it needs to be done this way (so authentication against users in a database is out as well).

I've tried using DirectoryEntry and WinNT like so:

DirectoryEntry user = new DirectoryEntry(String.Format("WinNT://{0}/{1},User",
serverName, username), username, password, AuthenticationTypes.Secure)

but this results in an exception when you try to log in more than one user:

Multiple connections to a server or shared resource by the same user, using more than one user name, are not allowed. Disconnect all previous connections to the server or shared resource and try again.

I've tried making sure my DirectoryEntries are used inside a using block, so they're disposed properly, but this doesn't seem to fix the issue. Plus, even if that did work it is possible that two users could hit that line of code concurrently and therefore try to create multiple connections, so it would be fragile anyway.

Is there a better way to authenticate against local Windows accounts on a remote machine, authorise against their groups, and change their passwords?

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Web Forms :: Authenticate User When WebMethod Is Called Using JQuery

Jul 3, 2012

I check using web service that we can invoke. So, I use web method at code behind like below 

[WebMethod]public static string ReceiveWebService(string type_list, string type_accom){ 
return string.Format("Thank you ,{0} number of rows inserted!", rowsInserted);}

And check user session at load like below

if (Session["user"] == "Abhijit"){}else{Response.Redirect("Login.aspx");}

Is this process secure?

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Security :: Creating A Website For Reset The Password If Authenticate User?

Mar 7, 2010

I am creating a website for reset the password in one of the application from the back end.

I have created a webpage with only one button called "RESET".

If user click the button, it should check the user have already access the application from the "USER" table. If no access, the message appears "You do not have an access."

If yes, next step whether the user have authenticate. If yes update the encrypted password from new table called "UMRESET" to the application table "USER" password.

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C# - Remove Case Sensitivity From FormsAuthentication.Authenticate Of User Name/password?

Jul 5, 2010

The below code and the config works fine, but force to enter user name/password case sensitively, i want to make it non case sensitive.


protected void LoginButton_Click(object sender, EventArgs e)
string uid = UserText.Text.Trim();
string pwd= PwdText.Text.Trim();
if (string.IsNullOrEmpty(uid) ||

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Security :: Add Another Custom Dropdownlist In Login Control To Authenticate The User?

Aug 13, 2010

how can add another dropdown inside the login control and authenticate the user on the basis of user name,password,and location.

is there any other way?

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Web Forms :: Authenticate Current Logged In User In Asp 3.5 - Error CS1061

Jan 26, 2010

I want to check that the user trying to log-in is authenticated and it belongs to a certain role. For this I have wrote the following code

protected void btnLoginButton_Click(object sender, EventArgs e)
if (this.User.Identity.IsAuthenticated && this.User.IsInRole("Admin"))
if (this.User.Identity.IsAuthenticated && this.User.IsInRole("Editor"))
if (this.User.Identity.IsAuthenticated && this.User.IsInRole("Moderator"))

But when I ran this code it gave me this error error CS1061: 'Page' does not contain a definition for 'User' and no extension method 'User' accepting a first argument of type 'Page' could be found (are you missing a using directive or an assembly reference?) I have already added following directives to cs page-

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

Can anybody tell what directie I should add for "this.User" <P.S> My application is web based and it is in ASP.Net 3.5(C#).

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Security :: Manual Authenticate And Set User Roles Temporarily For Session?

Feb 25, 2010

Im creating an application where the user table is stored outside the database, therefore i wont need to use the built-in user tables. However i would still like to use all the features the membership security provides i.e. restrict users from certain pages using the web.config

I would like to authenticate the user manually and set roles to that user temporarily only for that session. Is this possible?

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How To Authenticate An HTTP Request To Remote Server That Can Be Utilize On End User Browser

Jul 26, 2010

There is one page which is actually a streaming to The Axis IP camera which spits MJPEG output.It requires user to log in with the user name/password promp on browser .I am using this stream to show video directly on a web page.It shows video correctly but asks user to provide correct user name and password set for the camera,I tried to logging in to this camera on server side using HTTP requests and then I realized I authenticated server request not the browser the end user is using.

So what I want is a method server side or client side, that can allow me to log-in to camera automatically when my end-users visit this page.I am using with c# 2005

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C# - Login And Authenticate Against The Email Address And Then Load The Correct Name In The User Object?

Mar 6, 2011

I am using an email address as my "username" for Login. When a user logs in the User object that is created has the Email address as the name which is incorrect. The actual name is another field in the DB. How do I login and authenticate against the email address and then load the correct name in the User object?

I am using forms authentication with a custom MembershipProvider and RoleProvider.

Edits Below to Clarify

I have a custom MembershipProvider that validates users by email address and password. It is called by the basic Login Control and registered in web.config.


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C# - FormsAuthentication.Authenticate Fails To Authenticate?

Feb 8, 2011

I currently have an odd problem with ASP.Net authentication. Consider the two following lines:

MembershipCreateStatus ct = new MembershipCreateStatus();
Membership.CreateUser("admin", "mypassword", "", "1", "1", true, out ct);

This does register my user in my database. I have verified this.However, when I run this immediately after:

FormsAuthentication.Authenticate("admin", "mypassword");

The authentication fails. The weird thing is I know for a fact that the user does exist in the db, and that is further confirmed if i run

MembershipUserCollection uc = Membership.FindUsersByName("admin");

and uc does hold my admin user withe all the proper info. why Authenticate would return false?

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Active Directory/LDAP :: Authenticate Local User Using Ldap Or Non Domain Authentication?

Aug 11, 2010

I created one application, and I need to authenticate local user. This user is the user who is login to his/her Personal Computer.. Main thing his that he/she does not in any DOMAIN... I want NON-DOMAIN authentication.

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Security :: How To Authenticate User When Enters Password That Should Be The Windows Password

Feb 4, 2010

I just begin creating a website for an organization. First page to be displayed in the login page. I dont have any knowledge in ASP.NET Security. On Login page, i want to display UserName field as disabled with the useralias of the user who currently logged into Windows. Password user has to provide and it should be that user's windows password.

How do i validate that password that user has entered is his windows password?

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