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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Can analyze traffic at the application level
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Allow traffic only in one direction and the return must be explicitly allowed
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Support user authentication
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Allows return traffic, only if a session is started
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Detailed explanation-1: -A stateful firewall is a firewall that monitors the full state of active network connections. This means that stateful firewalls are constantly analyzing the complete context of traffic and data packets, seeking entry to a network rather than discrete traffic and data packets in isolation.
Detailed explanation-2: -Stateful inspection, also known as dynamic packet filtering, is a firewall technology that monitors the state of active connections and uses this information to determine which network packets to allow through the firewall.
Detailed explanation-3: -Which statement describes the characteristics of packet-filtering & stateful firewalls as the relate to the OSI model? A packet-filtering firewall typically can filter up to the transport layer, whereas a stateful firewall can filter up to the session layer.
Detailed explanation-4: -Stateful Inspection Firewalls This firewall type combines packet inspection and TCP handshake verification. Stateful inspection firewalls maintain a table database that tracks all open connections and enables the system to check existing traffic streams.