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Question 44 - JN0-105 discussion

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Which two statements about firewall filters are correct? (Choose two.)

A.
Firewall filters are stateless.
Answers
A.
Firewall filters are stateless.
B.
Firewall filters can match Layer 7 parameters.
Answers
B.
Firewall filters can match Layer 7 parameters.
C.
Firewall filters are stateful.
Answers
C.
Firewall filters are stateful.
D.
Firewall filters can match Layer 4 parameters.
Answers
D.
Firewall filters can match Layer 4 parameters.
Suggested answer: A, D

Explanation:

Firewall filters in Junos OS are stateless, meaning they process each packet individually without regard to the state of a connection or sequence of packets. These filters can match various packet attributes, including those at Layer 4, such as TCP and UDP port numbers. This allows for granular control over traffic based on the type of service or application. Unlike stateless filters, stateful firewalls keep track of the state of active connections and make decisions based on the context of the traffic flow, which is not a capability of Junos firewall filters. Additionally, Junos firewall filters primarily operate up to Layer 4 and do not natively inspect Layer 7 parameters, which involve application-level data.

asked 18/09/2024
Andrew Chan
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