青云翻译

That allows the user to specify a specific account and password to access your server

That can allow a specified user to a special account number and password to access your server

In other words, may let assign the user visits your server by the special account number and the password

In other words you can let user is specified by means of special account number and password access to your server

That can allow a specified user to a special account number and password to access your server