How to configure LDAP server and fetch the certificates from the same to test locally?

DirectoryEntry rootEntry = new DirectoryEntry("LDAP://some.ldap.server.com");
              rootEntry.AuthenticationType = AuthenticationTypes.None; //Or whatever it need be
              DirectorySearcher searcher = new DirectorySearcher(rootEntry);
              string searchString = "(CN = EFTS-CA-TEST)";
                          
              searcher.Filter = searchString;//Search how you want.  Google "LDAP Filter" for more.
              foreach (SearchResult result in searcher.FindAll())
              {
                  Console.WriteLine("account name: {0}", result.Properties["samaccountname"].Count > 0 ? result.Properties["samaccountname"][0] : string.Empty);
                  Console.WriteLine("common name: {0}", result.Properties["cn"].Count > 0 ? result.Properties["cn"][0] : string.Empty);
              }