COMPUTER FUNDAMENTALS

Detailed explanation-1: -Firewall examines each that are entering or leaving the internal network. Explanation: Firewalls examines each data packets that are entering or leaving the internal network which ultimately prevents unauthorized access.

Detailed explanation-2: -Stateful inspection firewall State-aware devices not only examine each packet, but also keep track of whether or not that packet is part of an established TCP or other network session. This offers more security than either packet filtering or circuit monitoring alone but exacts a greater toll on network performance.

Detailed explanation-3: -A stateful firewall keeps track of the state of communications sessions. It monitors the incoming and outgoing packets in each TCP connection.

Detailed explanation-4: -A packet filtering firewall examines header information of data packets that come into a network. It determines whether to deny or allow (drop of forward) a packet into the next network connection.

Detailed explanation-5: -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.