A packet filtering firewall can
2013
A packet filtering firewall can
- A.
deny certain users from accessing a service
- B.
block worms and viruses from entering the network
- C.
disallow some files from being accessed through FTP
- D.
block some hosts from accessing the network
Attempted by 26 students.
Show answer & explanation
Correct answer: D
Packet filtering firewalls operate primarily at the network and transport layers, inspecting IP addresses and port numbers. They are capable of blocking traffic based on source or destination IP addresses, which corresponds to blocking specific hosts. Options regarding user authentication, virus detection, or file-level restrictions require deeper inspection capabilities found in application-layer firewalls.