COMPUTER THREATS SECURITY
WHAT IS A FIREWALL IN NETWORK SECURITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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open all ports except those needing to be used
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close all ports except those needing to be used
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block all incoming traffic
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block all traffic originating internally
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Detailed explanation-1: -DMZs function as a buffer zone between the public internet and the private network. The DMZ subnet is deployed between two firewalls. All inbound network packets are then screened using a firewall or other security appliance before they arrive at the servers hosted in the DMZ.
Detailed explanation-2: -A DMZ, short for demilitarized zone, is a network (physical or logical) used to connect hosts that provide an interface to an untrusted external network – usually the internet – while keeping the internal, private network – usually the corporate network – separated and isolated form the external network.
Detailed explanation-3: -DMZ networks are deployed to protect sensitive systems and resources. DMZ networks are often used for: Isolating and separating potential target systems from internal networks. Reducing and controlling access to the systems by external users.