Can anyone let me know if querying Active Directory server using ldapsearch, ldapadd, ldapdelete, etc. utilities is possible or not?

Querying Windows Active Directory server using ldapsearch from command line

I don&#39;t work with Microsoft but I&#39;m struggling understanding conceptually how AD, ADFS and LDAP work together.

Let&#39;s say I have an application that needs an Identity Provider. How does AD and LDAP come into play?

My googling hasn&#39;t come up with a clear summary of these concepts for me, but if there is a resource that exists, please do point me towards it.



AD vs ADFS vs LDAP: Explain it like I&#39;m 5

I need to test an application which uses LDAP for authentication, but still I don&#39;t have access to the server I have to use, but I need to test my application.

Does somebody know if is there any LDAP server with data that i can use for access??

Is there any free ldap server with data?

I have found a lot of information from the past saying that [LDAP authentication isn&#39;t enabled yet but you can get around that using third party packages.][1]
However, it seems that LDAP authentication WAS [implemented back in January][2]. I can&#39;t seem to find any information on HOW to implement it.

I already have [custom authentication][3] set up in my project, I just need the logic to fill in the `HandleAuthenticateAsync` method.

I have tried using [other examples][4], but they don&#39;t seem to work with .NET Core 2.0.

Here is the only relevant code that I have that I can think of posting

    protected override Task&lt;AuthenticateResult&gt; HandleAuthenticateAsync()
    {
        // Get Authorization header value
        if (!Request.Headers.TryGetValue(HeaderNames.Authorization, out var authorization)) {
            return Task.FromResult(AuthenticateResult.Fail(&quot;Cannot read authorization header.&quot;));
        }

        // TODO: Authenticate user

        // Create authenticated user ticket
        var identities = new List&lt;ClaimsIdentity&gt; { new ClaimsIdentity(&quot;custom auth type&quot;) };
        var ticket = new AuthenticationTicket(new ClaimsPrincipal(identities), Options.Scheme);

        return Task.FromResult(AuthenticateResult.Success(ticket));

        // else User not authenticated
        return Task.FromResult(AuthenticateResult.Fail(&quot;Invalid auth key.&quot;));
    }

So, my question is, how do I implement LDAP Authentication in .NET Core 2.0?

  [1]: https://nicolas.guelpa.me/blog/2017/02/15/dotnet-core-ldap-authentication.html
  [2]: https://github.com/aspnetboilerplate/aspnetboilerplate/issues/2755
  [3]: https://stackoverflow.com/a/46118528/3103633
  [4]: https://stackoverflow.com/q/11561689/3103633

ASP.NET Core 2.0 LDAP Active Directory Authentication

I am writing the following methods to add and remove users from active directory in C#.


    void AddUserToGroup(string userId, string groupName);
    void RemoveUserFromGroup(string userId, string groupName);

How best to implement these methods?

Here is some code from CodeProject. I can&#39;t see where the AD server is specified in these examples though? (is it implicitly supplied by the .NET framework when using the LDAP protocol?). Are these examples worth following?

    public void AddToGroup(string userDn, string groupDn)
    {
        try
        {
            DirectoryEntry dirEntry = new DirectoryEntry(&quot;LDAP://&quot; + groupDn);
            dirEntry.Properties[&quot;member&quot;].Add(userDn);
            dirEntry.CommitChanges();
            dirEntry.Close();
        }
        catch (System.DirectoryServices.DirectoryServicesCOMException E)
        {
            //doSomething with E.Message.ToString();
    
        }
    }


    public void RemoveUserFromGroup(string userDn, string groupDn)
    {
        try
        {
            DirectoryEntry dirEntry = new DirectoryEntry(&quot;LDAP://&quot; + groupDn);
            dirEntry.Properties[&quot;member&quot;].Remove(userDn);
            dirEntry.CommitChanges();
            dirEntry.Close();
        }
        catch (System.DirectoryServices.DirectoryServicesCOMException E)
        {
            //doSomething with E.Message.ToString();
    
        }
    }

Adding and removing users from Active Directory groups in .NET

I know that LDAP is used to provide some information and to help facilitate authorization. 

But what are the other usages of LDAP? 


What is LDAP used for?

I want to write an LDAP query which tests whether a user (sAMAccountName) is a member of a particular group. Is it possible to do that so that I get either 0 or 1 result records?

I guess I can get all groups for the user and test each one for a match but I was wondering if I could pack it into one LDAP expression.

Any ideas?

Thanks

How to write LDAP query to test if user is member of a group?

I have a search query in LDAP like this. What exactly does this query mean?

    (&quot;CN=Dev-India,OU=Distribution Groups,DC=gp,DC=gl,DC=google,DC=com&quot;);


What are CN, OU, DC in an LDAP search?


I&#39;m looking for a way to authenticate users through LDAP with PHP (with Active Directory being the provider). Ideally, it should be able to run on IIS 7 ([adLDAP][1] does it on Apache). Anyone had done anything similar, with success?

* Edit: I&#39;d prefer a library/class with code that&#39;s ready to go... It&#39;d be silly to invent the wheel when someone has already done so.

  [1]: http://adldap.sourceforge.net/

Authenticating in PHP using LDAP through Active Directory

How do I authenticate against AD using Python + LDAP. I&#39;m currently using the python-ldap library and all it is producing is tears.

I can&#39;t even bind to perform a simple query:

    import sys
    import ldap
    
    
    Server = &quot;ldap://my-ldap-server&quot;
    DN, Secret, un = sys.argv[1:4]
        
    Base = &quot;dc=mydomain,dc=co,dc=uk&quot;
    Scope = ldap.SCOPE_SUBTREE
    Filter = &quot;(&amp;(objectClass=user)(sAMAccountName=&quot;+un+&quot;))&quot;
    Attrs = [&quot;displayName&quot;]
    
    l = ldap.initialize(Server)
    l.protocol_version = 3
    print l.simple_bind_s(DN, Secret)
    
    r = l.search(Base, Scope, Filter, Attrs)
    Type,user = l.result(r,60)
    Name,Attrs = user[0]
    if hasattr(Attrs, &#39;has_key&#39;) and Attrs.has_key(&#39;displayName&#39;):
      displayName = Attrs[&#39;displayName&#39;][0]
      print displayName
    
    sys.exit()

Running this with `myusername@mydomain.co.uk password username` gives me one of two errors:

`Invalid Credentials` - When I mistype or intentionally use wrong credentials it fails to authenticate.

&gt;ldap.INVALID_CREDENTIALS: {&#39;info&#39;: &#39;80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error, data 52e, vece&#39;, &#39;desc&#39;: &#39;Invalid credentials&#39;}

Or 

&gt;ldap.OPERATIONS_ERROR: {&#39;info&#39;: &#39;00000000: LdapErr: DSID-0C090627, comment: In order to perform this operation a successful bind must be completed on the connection., data 0, vece&#39;, &#39;desc&#39;: &#39;Operations error&#39;}

What am I missing out to bind properly?

I am getting the same errors on fedora and windows.

Authenticating against active directory using python + ldap

What are the differences between LDAP and Active Directory?

How can I use a a search filter to display users of a specific group?

I&#39;ve tried the following:

    (&amp;
        (objectCategory=user)
        (memberOf=MyCustomGroup)
    )

and this:

    (&amp;
        (objectCategory=user)
        (memberOf=cn=SingleSignOn,ou=Groups,dc=tis,dc=eg,dc=ddd,D‌​C=com)
    )   

 

but neither display users of a specific group.

Query to list all users of a certain group

&gt; LDAP: error code 49 - 80090308: LdapErr: DSID-0C0903A9, comment: AcceptSecurityContext error, data 52e, v1db1

I know &quot;52e&quot; code is when username is valid, but password is invalid. I am using the same user  name and password in my apache studio, I was able to establish the connection succesfully to LDAP.

**Here is my java code** 

        String userName = &quot;*******&quot;;
        String password = &quot;********&quot;;
        String base =&quot;DC=PSLTESTDOMAIN,DC=LOCAL&quot;;
        String dn = &quot;cn=&quot; + userName + &quot;,&quot; + base;  
        Hashtable env = new Hashtable();
        env.put(Context.INITIAL_CONTEXT_FACTORY,&quot;com.sun.jndi.ldap.LdapCtxFactory&quot;);
        env.put(Context.PROVIDER_URL, &quot;ldap://******&quot;);
        env.put(Context.SECURITY_AUTHENTICATION, &quot;simple&quot;);
        env.put(Context.SECURITY_PRINCIPAL, dn);
        env.put(Context.SECURITY_CREDENTIALS, password);
        LDAPAuthenticationService ldap = new LDAPAuthenticationService();
       // LdapContext ctx;
        DirContext ctx = null;
        try {
            ctx = new InitialDirContext(env);



**My error is on this line**: `ctx = new InitialDirContext(env);`

I do not know what exactly is causing this error. 

LDAP: error code 49 - 80090308: LdapErr: DSID-0C0903A9, comment: AcceptSecurityContext error, data 52e, v1db1

I have a simple task of authenticating against Active Directory using Java. Just verifying credentials and nothing else. Let&#39;s say my domain is &quot;fun.xyz.tld&quot;, OU path is unknown, and username/password is testu/testp. 

I know there&#39;s a few Java libraries out there that simplify this task, but I wasn&#39;t successful at implementing them. Most examples that I&#39;ve found addressed LDAP in general, not specifically Active Directory. Issuing LDAP request means sending an OU path in it, which I don&#39;t have. Also, the application that issues LDAP request should be already bound to Active Directory in order to access it... Insecure, since the credentials would have to be stored someplace discoverable. I would like a test bind with test credentials, if possible - this would mean that account is valid.

Last, if possible, is there a way to make such authentication mechanism encrypted? I know that AD uses Kerberos, but not sure if Java&#39;s LDAP methods do.

Does anyone has an example of working code? Thanks.

Authenticating against Active Directory with Java on Linux

Is there an easy way to test the credentials of a user against an LDAP instance?  I know how to write a Java program that would take the &#39;User DN&#39; and password, and check it against the LDAP instance.  However is there any easier way?  Specially a method that not only authenticates the user, but also lists all the user&#39;s roles.

Easy way to test an LDAP User&#39;s Credentials

I often hear things like &quot;Can we load our employee info using LDAP?&quot;  Yet, the title &quot;Lightweight Directory Access Protocol&quot; makes me think of it as a protocol rather than a physical database management system like Oracle or MSSQL.

So could someone please explain to me what LDAP is, how it&#39;s used, and how it basically works?  Is LDAP simply a standard protocol for extracting data from a variety of DBMSs?  In an architecture diagram, would LDAP be simply an arrow drawn between the DB and the application server?

Could someone please explain LDAP?

I choose to use &quot;Jenkins&#39;s own user database&quot; security realm for user login as I couldn&#39;t use LDAP in my company.  And Google&#39;s OpenID has issue when you decided to change the hostname or port number to something else.

And I use &quot;Project-based Matrix Authorization Strategy&quot; schema for my security.

But I don&#39;t seem to able to create my own group, and add users to the group to manage the permission.

How to create and add users to a group in Jenkins for authentication?

I&#39;ve been in touch with LDAP in many projects I&#39;ve been involved in but, the truth be told, I don&#39;t really understand it. I thought it was just a person directory but after I discovered that it can contain any objects in a hierarchical structure.

I installed openldap in my box and I found many tutorials regarding just the installation.

What is LDAP? What are the scenarios where LDAP is the right choice? What are the LDAP concepts I should know for working with it? What are the advantages of LDAP? Is it used just because old applications used it? Is there a good doc anywhere on internet explaining all this questions?

**UPDATE**:
Complementing the answers I found [this link][1] which contains a quick start guide for LDAP newbie like me.


  [1]: http://www.go4expert.com/forums/showthread.php?t=4814

What does LDAP solve?

I wanted the SSL Certificate of my LDAP Server which is Novell eDirectory. I have used openssl to connect to ldap to view the certificate. 

    openssl s_client -connect 192.168.1.225:636

It is just printing the certificate. How can I save this to some certificate format file?

How to save the LDAP SSL Certificate from OpenSSL

When I run the following command:

    sudo pip install python-ldap

I get this error:

&gt;In file included from Modules/LDAPObject.c:9:
&gt;
&gt;Modules/errors.h:8: fatal error: lber.h: No such file or directory

Any ideas how to fix this?


I can&#39;t install python-ldap

Is it possible to create an LDAP query which will return (or check for) users in a nested group? e.g. UserA is a member of GroupA, and GroupA is a member of GroupB. I want a query on GroupB to return that UserA is a member. LDAP only. The server is Active Directory.

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