src: Different sets of firewall rules for monitoring traffic between the internet and the DMZ, the LAN and the DMZ, and the LAN and the internet tightly control which ports and types of traffic are allowed into the DMZ from the internet, limit connectivity to specific hosts in the internal network and prevent unrequested connections either to the internet or the internal LAN from the DMZ.
tgt: Diferentes conjuntos de regras de firewall para o tráfego entre a Internet e a DMZ, a LAN e a DMZ e a LAN e a Internet controlam quais portas e tipos de tráfego são permitidos na DMZ oriundos da Internet, limitam a conectividade à hosts específicos na rede interna e impedem conexões não solicitadas, quer para a Internet ou rede interna, oriundos da DMZ.