i want to block all inbod access to my linux box and want to allow dns, http proxy,ssh,telnet,and ftp how can i do this -- Syed Kashif Ali Bukhari Network Associate Asia Net Cell :- +92-300-4018407 , +92-300-4295604 Ph +92-42-111-111-202 Fax +92-42-5840905 MSN:- kbukhari@xxxxxxx ; kashif.bukhari@xxxxxxxxxxx http://asia.net.pk , http://asiatec.biz