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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Circuit-level
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Application-level
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Packet filtering
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VPN concentrator
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Detailed explanation-1: -A packet filtering firewall is considered a stateless firewall because it examines each packet and uses rules to accept or reject each packet without considering whether the packet is part of a valid and active session.
Detailed explanation-2: -Static Packet Filter This type of firewall decides whether to accept or deny individual packets, based on examining fields in the packet’s IP and protocol headers.
Detailed explanation-3: -A packet filtering firewall is a network security technique that regulates data flow to and from a network. It is a security mechanism that allows packets to move across networks while controlling their flow through the use of a set of rules, protocols, IP addresses, and ports.
Detailed explanation-4: -Stateful firewalls are capable of monitoring and detecting states of all traffic on a network to track and defend based on traffic patterns and flows. Stateless firewalls, however, only focus on individual packets, using preset rules to filter traffic.
Detailed explanation-5: -There are three types of firewalls based on how you decide to deploy them: hardware, software, and cloud-based firewalls.