My website is deployed on IIS using an application pool with identity = A.
From this website, can I get the credential of A (full userName and passWord)?
Please show me the code also.
string appPoolAccount = System.Security.Principal.WindowsIdentity.GetCurrent().Name;
// Define Context
PrincipalContext context = new PrincipalContext(ContextType.Domain);
The credentials for all app pools are stored, encrypted, in applicationHost.config (the IIS config file in the inetsrv directory). You could read the encrypted credentials and then call the IIS machine key encryption API to decrypt the password (https://msdn.microsoft.com/en-us/library/system.web.security.machinekey(v=vs.110).aspx)
Related
The code below works on my local machine passing DefaultAzureCredential(). But when I host it on IIS on Azure VM, the authentication fails. I tried setting the ApplicationPool's identity to my credential since I have access to the Azure KeyVault, still the same 403 forbidden error. Deploying as AppServices on Azure is not an option currently.
What is the best way to read Azure KeyVault Secrets in this scenario?
string kvUri = "https://mykeyvault.vault.azure.net/";
string secretName = "MyConnectionString";
var client = new SecretClient(new Uri(kvUri), new DefaultAzureCredential());
var secret = await client.GetSecretAsync(secretName);
Console.WriteLine(secret?.Value?.Value);
still the same 403 forbidden error
We need to enable the system-assigned Managed Identity on the VM which we have deployed our Web App.
And provide the permissions for the Identity which you have set in previous step.Run the below command in Azure CLI
az keyvault set-policy --name 'KeyVaultName' --object-id "ObjectID of SystemAssigned Managed Identity" --secret-permissions get list set delete
Make sure you have given access permissions to retrieve the Key Vault.
In Azure Keyvault => Access policies , select the Get,List permissions and provide the Principal - name will be same as your deployed WebApp , continue with the steps and Review +create
Given the following architecture which I probably cannot change:
Application - ASP.NET MVC + Entity Framework, running on IIS
Database - SQL Server, permissions granted to a single specific domain user that runs the app pool in IIS
Remote Service - Needs actual user credentials (not the app pool user)
When enabling Windows Authentication + Impersonation in IIS, and setting Integrated Security=true in the connection string, all database requests use the impersonated user's credentials and fail, because users don't have permissions on the database.
I'm looking for a way to impersonate users when accessing the remote service but use the app pool user when accessing the database through Entity Framework, without having to put the username and password in the connection string.
I have an Intranet which publishes an RSS feed, I'm trying to consume that RSS feed from another intranet site hosted on the same IIS server within a Windows domain environment.
Both sites have
<authentication mode="Windows">
And anonymous authentication is disabled.
Developing locally (Windows Auth but not on a domain) the following works:
var request = HttpWebRequest.Create(feedUrl);
request.Credentials = CredentialCache.DefaultNetworkCredentials;
XElement f;
using (var response = request.GetResponse())
{
var reader = new XmlTextReader(response.GetResponseStream());
f = XElement.Load(reader);
}
return f;
However when I deploy this to production (Windows 2008) I get a 401 Unauthorised exception. I can view the RSS feed in the browser without issue when logged in as a domain user but when trying to access it through code it doesn't seem to authenticate.
I've also tried:
request.Credentials = New System.Net.NetworkCredential("myUser","myPass","myDomain");
But still the 401 Unauthorised. Can anyone offer thoughts as to what I'm overlooking?
When you are running locally in VS, CredentialCache.DefaultNetworkCredentials will get your username, whereas when you have this client running on a web server this will return the account used to execute your application under. This is usually a NetworkService account local to your web server. That's why when you attempt to use this client to authenticate against the remote service you are getting 401. So you could configure your ASP.NET MVC client application to execute under a domain account which has permissions to access the remote service. This could be done in the advance properties of the Application Pool in the IIS manager.
I am attempting to create an ASP.NET (.NET 3.5) website to connect to our Exchange 2010 server through Exchange Web Services, I am able to connect to EWS when I define the username, password and domain to authenticate with but I would like, if possible, to not include login details in my code.
In IIS I have enabled Integrated Windows Authentication for the site, in web.config of the site I have <authentication mode="Windows"/>.
The following code is what I have been woking with:
svc.UseDefaultCredentials = True
svc.Credentials = New WebCredentials()
svc.Url = New Uri(svcURL)
With the above code I am receiving the message:
When making a request as an account that does not have a mailbox, you
must specify the mailbox primary SMTP address for any distinguished
folder Ids.
When I attempt to use svc.Credentials = CredentialCache.DefaultNetworkCredentials (in place of svc.Credentials = New WebCredentials()) I receive the error message:
Unable to cast object of type 'System.Net.SystemNetworkCredential' to
type 'Microsoft.Exchange.WebServices.Data.ExchangeCredentials'.
As mentioned, the only thing that has worked is to define the user credentials to authenticate to by hardcoding user login details, which I would rather not do: svc.Credentials = New WebCredentials("username","password","domain")
Has anyone been able to authenticate to EWS using the credentials of the current logged in user in an ASP.NET website?
By default it is not possible to delegate a user's credentials from one server (the server on which you are hosting your ASP.NET site) to another (your Exchange server). This is known as a "server hop" and Windows will prevent it by default as a security measure.
You have a couple of options to work around this:
Using Kerberos: When Kerberos is enabled it makes it possible to delegate user credentials between servers when using Windows authentication. I do not know the exact details on how to set up Kerberos as I am only a humble developer but maybe your system administrator can assist you. AFAIK, you need to set up your ASP.NET server to allow user delegation.
Setting the user identity of your IIS application pool: If Kerberos is not an option, you may change the identity of the application pool that your ASP.NET site is running under. First define a new application pool in IIS manager. Then go to the Advanced Settings dialog for that application pool and set the identity to a domain user that is allowed to access your Exchange server. More info on the application pool identity here: http://technet.microsoft.com/en-us/library/cc771170(v=WS.10).aspx.
Setting the <identity> element: If you for some reason cannot change the application pool, you may try impersonation of your ASP.NET web site using the <identity> element in your web.config file. ASP.NET gives you the option of storing the credentials in the registry so that you do not have to put them directly in your web.config file. More info here: http://msdn.microsoft.com/en-us/library/72wdk8cc(v=vs.90).aspx
Using the <appSettings> ellement and encryption: The last option I can think of is to simply put the credentials in your web.config file as normal <appSettings> and then encrypt the entire <appSettings> section. You would then simply read the appSettings from your code using the AppSettingsReader class. .NET allows you to encrypt sections of the web.config file out of the box and you can read the settings without event noticing that the section is encrypted. .NET takes care of decrypting for you. More info here: http://msdn.microsoft.com/en-us/library/zhhddkxy.aspx
I made an application that access CRM's web service. The problem is, when I deployed the dll into Sharepoint server, it returned error 401 unauthorized. Apparently the System.Net.CredentialCache.DefaultCredentials didn't work (my suspicion). Here's the code.
CrmSdk.CrmAuthenticationToken token = new CrmSdk.CrmAuthenticationToken();
token.AuthenticationType = AuthenticationType.AD;
token.OrganizationName = ORGANIZATION_NAME;
CrmService service = new CrmService();
service.Url = "http://crmserver:5555/mscrmservices/2007/crmservice.asmx";
service.CrmAuthenticationTokenValue = token;
service.PreAuthenticate = true;
service.Credentials = System.Net.CredentialCache.DefaultCredentials;
It goes vice-versa.
When I made application that access Sharepoint's webservice (coding the plugin) and deployed it to CRM server. It couldn't access the Sharepoint's web service. Unauthorized error. Here is the code:
Lists listService = new Lists();
listService.PreAuthenticate = true;
listService.Credentials = System.Net.CredentialCache.DefaultCredentials;
listService.Url = "http://sharepointserver/webname/_vti_bin/Lists.asmx";
My CRM server and Sharepoint server are in the same domain.
For both code, if I changed the credentials part into something like this then deploy it on server, it can run.
service.Credentials = new NetworkCredential("username", "password", "domain");
Still, I don't want to do this because it reveals user's password in the code. May anyone help me?
The IIS in both server doesn't allow Anonymous Access and it uses Integrated Windows Authentication.
Thank you
From my local computer, I can access the CRM web services or Sharepoint web services. I guess I'm authorized because the DefaultCredentials sent my credentials that its password is saved in the "Stored Username and Password" (Control Panel > User Accounts > tab Advanced > Manage Passwords)
This way, I don't have to type:
service.Credentials = new NetworkCredential("username", "password", "domain");
and my DefaultCredentials from my local comp is authorized to access the web services.
I tried to implement this on the Sharepoint server that access CRM web services. and..tadaa..it won't work. hahaha..
can we inject credentials to DefaultCredentials in server?
the last thing I want to do is to hardcode the useraccount (like the code above)
Could be that you need to be running Kerberos for authentication, but cannot be sure and it is a pain to setup just to check.
Have you verified that the default credentials are the same as those when you explicitly state them? It could be that the default credentails are those of another account that you wouldn't expect.
EDIT #1: Per the remarks for the DefaultCredentials property on MSDN:
DefaultCredentials represents the
system credentials for the current
security context in which the
application is running. For a
client-side application, these are
usually the Windows credentials (user
name, password, and domain) of the
user running the application. For
ASP.NET applications, the default
credentials are the user credentials
of the logged-in user, or the user
being impersonated.
You'll also want to ensure that the user accessing the CRM page (making the call to the SharePoint web service) can access the web service with their credentials and vice versa. If they can then it would seem more likely that some kind of impersonation is happening.
Edit #2: Assuming that you have access to both the CRM and SharePoint server you might take a peak into both the application and system logs. One or both should likely indicate a failed login and indicate which account attempted to access the resource (in this case the web services).
By using DefaultCredentials means the ASP.NET worker process or IIS worker process will take the credential of the user who run the IIS Application Pool.
so if your Dynamics CRM Application Pool is run under a user account Custom-CRM-Domain\JohnDoe, that means it will take the privileges under user account Custom-CRM-Domain\JohnDoe.
Please check the user account who run the application pool of the CRM\Sharepoint Application IIS Web application.
These are the steps to check the Application Pool:
Open the website -> Right Click -> Choose Properties
Select the Home Directory tab
Notice the Application Pool name at the dropdownlist below
Now, go to the Application Pools folder
Try to find the Application Pool name which has been listed in the step 3 -> Right Click and choose Properties
Select the "Identity" tab and you will find the user account who run the application pool
Hope this helps.
service.Credentials = System.Net.CredentialsCache.DefaultNetworkCredentials;
Try that.
Not familiar with Sharepoint, but can't you just store the connection information in a configuration and use built in tools for securing your web.config? Thats what I do.
https://web.archive.org/web/20211029043331/https://aspnet.4guysfromrolla.com/articles/021506-1.aspx
to be able use defaultcredentials, the user in active directory must be defined both in SharePoint and CRM and have enough privileges to do what you are doing with code.
And try to use sdk (crm have helper classes) instead of service definitions.
For fixing this issue you need to know first which user is running the App pool as the others said and if you need to use CredentialCache.DefaultCredentials then you have to add the user lets say svcadmin or the like into "Secondary site collection administrator" by running SharePoint central administration application . By that SP allows to the user which the credential has been passed through to access the things it needs.