LDAP to LDAPS URL Change (.Net MVC)

Question

My application is using the AD Authentication for Login using LDAP URL. All was fine until our SA told us to change the URL to LDAPS. Once I added the URL as LDAPS it throws an exception and does not allow users to Login. Please help me in this.

Working LDAP URL: LDAP://reg1.abc.com
LDAPS URL (NEW) : LDAPS://reg1.abc.com (Not working once changed)

Below is the code to Authenticate user through LDAP.

    public static SearchResult AuthenticateUser(string userName, string password)
    {
        var directoryEntry = new DirectoryEntry(ConfigurationManager.AppSettings["ActiveDirectoryPath"], userName, password, AuthenticationTypes.Secure);
        var directorySearcher = new DirectorySearcher(directoryEntry);
        directorySearcher.Filter = "(samaccountname=" + userName + ")";
        var result = directorySearcher.FindOne();
        return result;
    }

score 2 · Accepted Answer · edited May 23 '17 at 10:33

That's a common question that might be already answered at Unknown Error (0x80005000) with LDAPS Connection. Follow that link and try to add port 636 and custom certificate validation:

LdapConnection con = new LdapConnection(new LdapDirectoryIdentifier("server", port));
con.SessionOptions.SecureSocketLayer = true;
con.SessionOptions.VerifyServerCertificate = new VerifyServerCertificateCallback(ServerCallback);
con.Credential = new NetworkCredential(String.Empty, String.Empty);
con.AuthType = AuthType.Basic;
con.Bind();

In the given example Credential is using empty strings, that might need to be changed by real login/password if required.

LDAP to LDAPS URL Change (.Net MVC)

1 Answers1