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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Stateless Packet Filtering
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Stateful Packet Filtering
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Either A or B
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None of the above
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Detailed explanation-1: -The packet filtering firewall filters IP packets based on source and destination IP address, and source and destination port.
Detailed explanation-2: -Packet Filtering Firewalls 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-3: -Whereas stateful firewalls filter packets based on the full context of a given network connection, stateless firewalls filter packets based on the individual packets themselves. To do so, stateless firewalls use packet filtering rules that specify certain match conditions.
Detailed explanation-4: -A firewall is a device that inspects inbound packets. It can block or permit any packet, depending on the access control rules used to configure it.