COMPUTER NETWORKING

NETWORK SECURITY

FIREWALLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A ____ filtering firewall makes decisions about which network traffic to allow by examining information in the IP packet header, such as source and destination addresses, ports, and service protocols.
A
packet
B
stateful
C
application
D
proxy
Explanation: 

Detailed explanation-1: -A packet filtering firewall allows and blocks network traffic by examining information in the IP packet header such as source and destination addresses, ports, and service protocols. A packet filtering firewall:-Uses ACLs or filter rules to control traffic.-Operates at OSI Layer 3 (Network layer).

Detailed explanation-2: -Stateful firewalls are capable of monitoring and detecting states of all traffic on a network to track and defend based on traffic patterns and flows. Stateless firewalls, however, only focus on individual packets, using preset rules to filter traffic.

Detailed explanation-3: -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.

There is 1 question to complete.