NETWORK SECURITY
FIREWALLS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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53
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80
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42
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443
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21
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Detailed explanation-1: -A firewall is a network security device that prevents unauthorized access to a network. It inspects incoming and outgoing traffic using a set of security rules to identify and block threats. A firewall can be physical hardware, digital software, software as a service (SaaS) or a virtual private cloud.
Detailed explanation-2: -Expert Answer. The ideal way to give access to confidential resources over the internet is by using a virtual private network because encrypting all data ensures a safe connection between the client and server.
Detailed explanation-3: -Which of the following describes how access control lists can be used to improve network security? EXPLANATION An access control list filters traffic based on the IP header information, such as source or destination IP address, protocol, or socket number.
Detailed explanation-4: -Packet filtering firewalls allow or deny network packets based on the following criteria: The source IP address is where the packet is being sent from. The packet’s address is the destination IP address.