COMPUTER NETWORKING

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NETWORK SECURITY

FIREWALLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The firewall has as a component the filters (address blocking), proxy (application blocking), bastion host (equipment used for external access, isolated from the internal network) and demilitarized zones (isolation zones between the external and internal network).
A
RIGHT
B
WRONG
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -The correct answer is option 4. Network layer Firewall can filter on Source And Destination IP address, Source and Destination Port no for both TCP and UDP packet.

Detailed explanation-2: -Dual-homed host firewalls In this architectural approach, the bastion host accommodates two NICs (Network Interface Cards) in the bastion host configuration. One of the NIC is connected to the external network, and the other one is connected to the internal network thus providing an additional layer of protection.

Detailed explanation-3: -Packet filtering A network layer firewall or packet-filtering firewall works at the network layer of the Open Systems Interconnection (OSI) model and can be configured to deny or allow access to specific ports or Internet Protocol (IP) addresses.

Detailed explanation-4: -The correct answer is A system that prevents unauthorized access to a private network. A firewall is a system that prevents unauthorized access to a private network.

There is 1 question to complete.
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