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How to integret JAVA for LDAP autentication?

Posted on 2008-06-22
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Last Modified: 2010-05-18
We are having one internal application developed on JAVA. Now we want to Integrate autentication with existing windows 2003 Active directory. Is it possible to have ldap configured for authentication?
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Question by:ktwoisg
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Expert Comment

by:rameshsukka
ID: 21840135
We have open source LDAP API avaiable in market. You can use these API as Action Directory is V3 protocol. For more clarity,

Programatically you need to Bind to LDAP server with proper credentials. Let me know if you required any help on this.

Regards,
Ramesh Sukka.
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Meritor earned 125 total points
ID: 21841006
If you just need authentication from LDAP, there is a simpler way to it.
Just use JNDI. if you are able to create context then the user is authenticated, otherwise not
	Hashtable env = new Hashtable();
	env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");
	env.put(Context.PROVIDER_URL, "ldap://ap.abc.com:389");//LDAP server location
	env.put(Context.SECURITY_AUTHENTICATION,"simple");
	env.put(Context.SECURITY_PRINCIPAL,"userName"); // specify the username
	env.put(Context.SECURITY_CREDENTIALS,"password"); // specify the password
	DirContext ctx = new InitialDirContext(env);
 
	System.out.println("CTX:"+ctx);

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Author Comment

by:ktwoisg
ID: 21844061
Please let me know how to Bind to LDAP server with proper credentials.
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Expert Comment

by:rameshsukka
ID: 21844389

look at the sample code from
http://java.sun.com/products/jndi/tutorial/ldap/security/ldap.html

// Set up the environment for creating the initial context
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY,
    "com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");

// Authenticate as S. User and password "mysecret"
env.put(Context.SECURITY_AUTHENTICATION, "simple");
env.put(Context.SECURITY_PRINCIPAL, "cn=S. User, ou=NewHires, o=JNDITutorial");
env.put(Context.SECURITY_CREDENTIALS, "mysecret");

// Create the initial context
DirContext ctx = new InitialDirContext(env);

// ... do something useful with ctx


In above code,
S. user and password is "mysecret". After initializing content call ctx.bind() function

Regards,
Ramesh Sukka,
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