Which statements about firewall filters are correct? (JN0-102 Exam)

AC

The correct statements about firewall filters in the Junos OS are:

C. Firewall filters are used to control traffic passing through the device: Firewall filters are used to selectively allow or deny traffic based on specified criteria, such as the source and destination IP addresses, protocols, and ports. Firewall filters can be applied to both inbound and outbound traffic passing through the device.

A. Firewall filters are stateless: Firewall filters in Junos OS are stateless, which means that they do not maintain any information about the state of the traffic being filtered. As a result, each packet is evaluated independently without any knowledge of its previous or future packets.

B. Firewall filters are not used to control routing information that is exchanged between devices: Firewall filters are not designed to control the routing information that is exchanged between devices. Routing policies are used for this purpose, which determine how the device forwards or drops packets based on the destination IP address.

D. Firewall filters can be applied to traffic entering or exiting the device: Firewall filters can be applied to both inbound and outbound traffic passing through the device. This means that firewall filters can be used to control traffic that is entering or exiting the device, depending on the direction of the traffic flow.

In summary, firewall filters are used to selectively allow or deny traffic passing through the device based on specified criteria, they are stateless, and can be applied to both inbound and outbound traffic passing through the device. They are not used to control routing information that is exchanged between devices, which is the responsibility of routing policies.