Respuesta :
A packet filtering firewall is the oldest and most basic type of firewall. They work at the network layer, examining data packets against predefined rules for source and destination IP, protocol, source and destination ports, and deciding whether to forward or drop the packet.
On which network devices can a packet filter firewall be installed and on which OSI layers does this device operate?
Packet filtering firewalls work at the network layer (Layer 3) of the OSI model. Packet filtering firewalls make decisions based on network addresses, ports, or protocols. Packet filtering firewalls are very fast because there is not much logic behind their decisions.
Which of the following types of packet filtering processes would you choose?
There are four main types of packet filtering:
Firewall with static packet filtering. If you are using a firewall with static packet filtering, you will need to manually configure the firewall rules.
Firewall with dynamic packet filtering.
Firewall with stateless packet filtering.
Firewall with stateful packet filtering.
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