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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inspecting packets for which there are good application proxy filtering rules
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inspecting packets in isolation from their context
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Both A and B
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Neither A nor B
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Detailed explanation-1: -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-2: -Stateless packet filtering firewalls can be vulnerable because they test each packet on its own, creating more opportunities for hacks. Hackers can use fake IP addresses in packets to intrude networks because most packet filters don’t provide safety from address spoofing.
Detailed explanation-3: -A packet-filtering firewall examines packets in isolation and does not know the packet’s context. A stateful inspection firewall examines network traffic to determine whether one packet is related to another packet.
Detailed explanation-4: -Answer and Explanation: A stateful inspection firewall examines application level information from multiple packets such as protocol, source/destination IP address, source/destination port numbers, and the current sequence number of the packet.