I am working on a school assignment where we handle logins to a web application written in asp.NET using Active Directory. Our Active Directory is installed on a virtual machine on Azure.
When trying to login, I am presented with the following error:
I have checked my connection string multiple times, and can't seem to get it to work.
Currently, I have the following connection string:
<add name="ADConnectionString" connectionString="LDAP://ictforevents1.cloudapp.net/DC=ictforevents1,DC=cloudapp,DC=net" />
The DNS name assigned to our virtual machine is ictforevents1.cloudapp.net, which is also the domain I set up in the Active Directory setup wizard.
Using the data in the connection string above, I can connect to the AD using LDAP Admin.
How to fix the error?
I fixed the issue by replacing the domain with the IP address in the connection string. From what I could find, asp will always always try to use a secure connection, even when using the insecure port (389). It will not attempt this when an IP address is given.
My new connection string is:
<add name="ADConnectionString" connectionString="LDAP://23.97.173.160:389/CN=Users,DC=ictforevents1,DC=cloudapp,DC=net" />
While this is not ideal, because the server does not have a static IP, it's better than not working at all.
Related
I’m using asp.net framework 4.8
I’m trying to use the membership class with Active directory provider.
security team insists to use LDAPS protocol with ca certificate, so I set the config in this way:
web.config
<connectionStrings>
<add name="ADService" connectionString="LDAPS://ipaddress:636/OU=ou,DC=dc,DC=dc"/> (censored)
</connectionStrings>
<system.web>
<membership defaultProvider="AspNetActiveDirectoryMembershipProvider">
<providers>
<add name="AspNetActiveDirectoryMembershipProvider"
type="System.Web.Security.ActiveDirectoryMembershipProvider"
connectionStringName="ADService"
connectionUsername="MYUSERNAME"
connectionPassword="MYPASSWORD "
connectionProtection="Secure"/>
</providers>
</membership>
</system.web>
When I try to use Membership.GetUser() I get the following exception:
{"Error HRESULT E_FAIL has been returned from a call to a COM
component. (C:\Projects\ \project\web.config line 83)"}
I tired to do the steps in:
Error HRESULT E_FAIL has been returned from a call to a COM component VS2012 when debugging
I was able to connect to the active directory using LDAP browser but no through my code.
When I try to connect to another active directory on my local domain, which is not secured (LDAP on port 389) it does work.
any suggestions?
LDAP over SSL follows all the same rules as HTTP over SSL (HTTPS). The two most important parts are:
The domain name you use to connect must match one of the domains names on the certificate.
The SSL certificate must be issued by an entity that your computer trusts, and
Rule #1 means that you cannot use an IP address to connect, which it seems you are trying to do. You must use a domain name. That might be your only problem.
For rule #2, you can check the certificate by downloading it to your computer using this PowerShell script:
$webRequest = [Net.WebRequest]::Create("https://example.com:636")
try { $webRequest.GetResponse() } catch {}
$cert = $webRequest.ServicePoint.Certificate
$bytes = $cert.Export([Security.Cryptography.X509Certificates.X509ContentType]::Cert)
set-content -value $bytes -encoding byte -path "certificate.cer"
Change example.com to your domain name (you can actually use the IP address here since it's just downloading the cert, not evaluating whether it will be trusted). After running it, you will have a certificate.cer file that you can double-click on and inspect. It will tell you obviously whether the certificate is not trusted. If that's the case, you will have to install the root certificate as a Trusted Root Certificate on your computer.
To help with rule #1, you can also look at all the domains listed in the certificate by looking at the Details tab and looking at "Subject Alternative Name" in the list. There may only be one, but there might be more. If there are more than one, just make sure you use on that DNS resolves to the right IP address.
I cannot get my web app to connect to the database when running the app. I can connect in the SQL Server object explorer and I took the connection string from the connections properties
Here is my connection string :
<add name="Quotes.DAL.QuotesConnection"
connectionString="Data Source=(localdb)\v11.0;Initial Catalog=TestDB;Integrated Security=False;User ID=sa;Password=***;Connect Timeout=15;Encrypt=False;TrustServerCertificate=False"
providerName="System.Data.SqlClient" />
I can connect as SA and I can create the database that it points to in Management Studio. When my app tries to connect via Entity Framework I get the following error :
System.Data.SqlClient.SqlException (0x80131904): Login failed. The login is from an untrusted domain and cannot be used with Windows authentication. at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject,
I'm running Windows 7 as a home dev machine so there is no Active Directory.
Can anybody explain why this might happen?
I have found that this is probably because I have Entity Framework in another assembly. I created a new web application and its connection string works. When it try the same connection string in my DAL it fails with this same error!
Thanks
It may be because of setting Integrated Security=False, I have never set it to false. I normally use just the bare minimum Server=myServerAddress;Database=myDataBase;User Id=myUsername;
Password=myPassword; when setting up my connection strings with sql authentication, only adding things as I need them.
The other issue I see is using SA to connect to the database. This breaks almost every best practice in the book and I would recommend creating an app specific password for when you roll out the program. The reason being is the GOD ACCESS account for the server will have its password in plain text in the app.config file. Just something to keep in mind.
EDIT: After some comment discussion the connection string was in the wrong config file.
I’m having a problem with my SQL Connection strings not using the authentication provided in the connection string. I have written an ASP.NET application using self-tracking entities and I need to access data from two different servers. The first server, SQLSERVER1 is using windows authentication and is on the domain and im able to pull my data just fine. The second server connection however, is on another box off the domain and I need to use a specific login and password to access the data. I confirmed that the credentials im using in the connection string can connect to the server just fine.
On my web-server setup I have my app pool in IIS7 running under its own credential “Domain\AppPoolUser”.
For some reason, whenever I try to call data from SQLSERVER2 after publishing to the webserver im getting the following error, even though I have specified the credentials in my connection string and they are valid. The connection works fine however, if im debugging the application locally : Login failed for user 'DOMAIN\AppPoolUser'.
It seems like it’s not using the credentials I have specified in the connection string, and instead trying to connect as the application pools credentials. How can I setup the connection string to use the credentials I have provided?
Here is my connection strings:
<add name="ADATrackingContext" providerName="System.Data.SqlClient" connectionString="Server=SQLSERVER1;Database=ADATracking;Integrated Security=True;" />
<add name="PatientContext" providerName="System.Data.SqlClient" connectionString="Server=SQLSERVER2;Database=Patients;uid=PatientUser;password=123456;Integrated Security=False;" />
Not sure if it matters, but the user should be User Id= and not uid=
The ADATrackingContext connection string will attempt to login using the Domain\AppPoolUser domain account since you have set the Integrated Security = true. Since you don't have Domain\AppPoolUser as a login for your db, you will get the error you describe.
Double check to make sure you are passing the correct connection string to your DbContext.
It looks like the error was being caused beacuse I was trying to pull the data before my client page was authenticated to the ADATracking connection string. I moved the data call over to the HomeConstroller.cs instead of the Global.asax file and all is working now. My mistake.
I have a website included login module.when i hosted the website in iis there is an error
Server Error in "/" Application.
system.invalid operation Exception: Instance Failure
My ConnectionString is like this
<add name="MyConnectionstring" Connectionstring="Data Source=IP Address,1433;Network Library=DBMSSOCN;initial catalog=Databasename;integrated security=True" Provider Name="System.data.sqlclient"/>
How can i solve this problem?Any one knows Please help me
Simply change DataSource=My-PC\\\SqlServer2008 to DataSource=My-PC\SqlServer2008 in your Web config because the previous one is valid one you are writing in Code Beind file but not in Web config file as it is an XML file.
The first thing I noticed is that you need to replace IP Address in your connection string with the actual IP address and Databasename with the actual database name. You also don't need ",1433" after the IP Address since 1433 is the standard port.
Second, is the SQL you are connecting to the default instance on the machine? If it is a named instance, you need to make sure to include the name in the data source setting.
Third, does the ID the ASP.NET process is running under have authority to connect to the SQL Server instance?
I have two ASP.NET websites on a web-server, and two SQL Server databases.
I have a folder for Website #1, which contains a web.config with a connection string pointing to Database #1.
Under the folder for Website #1 there's a staging folder called 'staging', containing Website #2, and the web.config there has a connection string that points to Database #2.
Website #1 works perfectly.
But when I try to run Website 2, I always get the following error:
A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
I've verified that the connection string is correct and that it's pointing to Database #2.
But even when I swap in the connection string from Website #1, which works perfectly on Website #1, it still fails.
Here's what the connection string looks like:
<connectionStrings>
<add name="WebsiteConnectionString" connectionString="Data Source=localhost;Initial Catalog=WebsiteStaging;User Instance = false;User Id=xxxx;Password=yyyy" providerName="System.Data.SqlClient" />
</connectionStrings>
Is there anything unusual going on here that I'm not aware of?
Not sure which version of IIS you're using, but you might need to create two separate web applications: one pointing to the Website #1 folder and the other Website #2.
When you view Properties of the Website/virtual directory, the Application name should be set for both directories. Is this the case?
LOCALHOST is for IIS
(LOCAL) is for SQL Server
My connection strings usually say "Server=(LOCAL);Integrated Security=SSPI...."
I would check the security tab to find out the identity that both web sites are running under.
Really sorry... looks like it wasn't to do with the connection at all.
It was because the Linq-to-SQL data-layer (which was in another project) was referencing its own connection string (even though, wherever I instantiated a DataContext in the Website project, I always used the web.config connection string as a parameter).
But thanks for your answers, those would probably be good things to check, had the above not been the problem.