COMPUTER THREATS SECURITY
WHAT IS INTERNET SECURITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Stateful
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Stateless
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Either A or B
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None of the above
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Detailed explanation-1: -Packet filtering firewalls are the oldest, most basic type of firewalls. Operating at the network layer, they check a data packet for its source IP and destination IP, the protocol, source port, and destination port against predefined rules to determine whether to pass or discard the packet.
Detailed explanation-2: -Stateful firewalls intercept packets at the network layer and then derive and analyze data from all communication layers to improve security. Information about connection state and other contextual data is stored and dynamically updated.
Detailed explanation-3: -Such technology was named Deep Packet Inspection (DPI) and is now commonly used on the market. In contrast to traditional firewalls which made decisions on whether to pass or reject a packet based on the packet headers, a DPI firewall can analyse the packet data payload as well.
Detailed explanation-4: -The packet filtering firewall filters IP packets based on source and destination IP address, and source and destination port.
Detailed explanation-5: -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.