public DomainUserDto ProvideLogin(string login, string password) { var domainUserName = $"{login}@{_config.DomainName}"; _connection.Connect(_config.ServerName, _config.ServerPort); _connection.Bind(domainUserName, password); var searchFilter = string.Format(_config.SearchFilter, login); var result = _connection.Search( _config.SearchBase, LdapConnection.SCOPE_SUB, searchFilter, _attributes, false ); var ldapData = result.next()?.getAttributeSet(); if (ldapData == null) { throw new AuthenticationException("Given login or password are not correct . Please try again"); } var user = UserAdapter.Adapt(ldapData); return(user); }