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Question 106 - PCNSE discussion

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A firewall administrator wants to avoid overflowing the company syslog server with traffic logs.

What should the administrator do to prevent the forwarding of DNS traffic logs to syslog?

A.
Disable logging on security rules allowing DNS.
Answers
A.
Disable logging on security rules allowing DNS.
B.
Go to the Log Forwarding profile used to forward traffic logs to syslog. Then, under traffic logs match list, create a new filter with application not equal to DNS.
Answers
B.
Go to the Log Forwarding profile used to forward traffic logs to syslog. Then, under traffic logs match list, create a new filter with application not equal to DNS.
C.
Create a security rule to deny DNS traffic with the syslog server in the destination
Answers
C.
Create a security rule to deny DNS traffic with the syslog server in the destination
D.
Go to the Log Forwarding profile used to forward traffic logs to syslog. Then, under traffic logs match list, create a new filter with application equal to DNS.
Answers
D.
Go to the Log Forwarding profile used to forward traffic logs to syslog. Then, under traffic logs match list, create a new filter with application equal to DNS.
Suggested answer: B

Explanation:

A log forwarding profile defines which logs are forwarded to which destinations, such as syslog servers. By creating a filter with application not equal to DNS, the log forwarding profile will exclude DNS traffic logs from being forwarded to syslog. Disabling logging on security rules allowing DNS will prevent the firewall from generating any logs for DNS traffic, which may not be desirable. Creating a security rule to deny DNS traffic with the syslog server in the destination will block the communication between the firewall and the syslog server, which may affect other logs. Creating a filter with application equal to DNS will forward only DNS traffic logs to syslog, which is the opposite of what is required.

Reference: https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-admin/monitoring/configure-log-forwarding https://docs.paloaltonetworks.com/network-security/security-policy/objects/log-forwarding

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asked 23/09/2024
william hwang
28 questions
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