The “pre Windows 2000” name i.e. DOMAIN\SomeBody, the Somebody portion is known as sAMAccountName. So try: using(DirectoryEntry de = new DirectoryEntry(“LDAP://MyDomainController”)) { using(DirectorySearcher adSearch = new DirectorySearcher(de)) { adSearch.Filter = “(sAMAccountName=someuser)”; SearchResult adSearchResult = adSearch.FindOne(); } } [email protected] is the UserPrincipalName, but it isn’t a required field.
This username, password within this line: DirectoryEntry(“LDAP://myserver/OU=People,O=mycompany”, username, password); should be for an account that has permission for directory lookup. It could be a service account or testing purpose try with your own. This shouldn’t be the user/pass of someone who you are trying to authenticate. If you want to authenticate, you can use following … Read more
You do an NTLM/Kerberos/Negotiate SSPI exchange loop. There is a a full sample on MSDN for both the client and the server. To be clear: you do not use any sort of LDAP access explictily. Is the LSA (Local Security Authority) that talks with LDAP and establishes the identity of the client. If you are … Read more
I was able to validate credentials using the System.DirectoryServices.Protocols namespace, thanks to a co-worker. Here’s the code: // See http://support.microsoft.com/kb/218185 for full list of LDAP error codes const int ldapErrorInvalidCredentials = 0x31; const string server = “sd.example.com:636”; const string domain = “sd.example.com”; try { using (var ldapConnection = new LdapConnection(server)) { var networkCredential = new … Read more
Well, I think your connection string is missing a bit – specifying just the server name isn’t good enough – you also need to specify a “starting point” for your search. In AD, this would typically be something like the “Users” container in your domain, which you’d specify like this in LDAP parlance: LDAP://novellBox.sample.com/cn=Users,dc=YourCompany,dc=com Not … Read more
According to Technet: How Active Directory Searches Work, the maximum LDAP request size that the server attempts to process defaults to 10,485,760 bytes. If the server receives a request that is larger than this value, it closes the connection. Hope that helps.
A little late but I’ll throw this out there. If you want to REALLY be able to determine the specific reason that an account is failing authentication (there are many more reasons other than wrong password, expired, lockout, etc.), you can use the windows API LogonUser. Don’t be intimidated by it – it is easier … Read more
I had this problem too using IIS Express and VS 2010. What fixed it for me was a comment on another thread. Validate a username and password against Active Directory? but i’ll save you the click and search… 🙂 Just add ContextOpations.Negotiate to you Validate Credentials call like below. bool valid = context.ValidateCredentials(user, pass, ***ContextOptions.Negotiate***); … Read more
Another approach is using UnboundID. Its api is very readable and shorter Create a Ldap Connection public static LDAPConnection getConnection() throws LDAPException { // host, port, username and password return new LDAPConnection(“com.example.local”, 389, “[email protected]”, “admin”); } Get filter result public static List<SearchResultEntry> getResults(LDAPConnection connection, String baseDN, String filter) throws LDAPSearchException { SearchResult searchResult; if (connection.isConnected()) … Read more
This seems to be a JPEG-File, so you should be able to send that data together with the appropriate mime-type to the browser. It should be possible to output that image with something like: <img src=”data:image/jpeg;base64,<?php echo base64_encode($imageString); ?>”/> But it might also be possible to save files of any image format into that thumbnailPhoto … Read more