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312-49V11 · Question #96

Sophia, a network security analyst, is reviewing the logs from a Cisco router in an attempt to identify suspicious traffic patterns. She encounters a log entry that matches the criteria for an…

The correct answer is C. %SEC-6-IPACCESSLOGP. Within the CHFI v11 syllabus under Network Forensics and Log Analysis, understanding Cisco router log mnemonics is essential for investigating network-based attacks and policy violations. Cisco devices generate structured log messages that include a facility, severity level…

Network Forensics

Question

Sophia, a network security analyst, is reviewing the logs from a Cisco router in an attempt to identify suspicious traffic patterns. She encounters a log entry that matches the criteria for an access control list (ACL) filter, showing that a TCP or UDP packet was detected based on the applied rules. Based on the log entry description, which of the following is the correct mnemonic for this log message?

Options

  • A%IPV6-6-ACCESSLOGP
  • B%SEC-6-IPACCESSLOGRL
  • C%SEC-6-IPACCESSLOGP
  • D%SEC-4-TOOMANY

How the community answered

(48 responses)
  • A
    4% (2)
  • B
    10% (5)
  • C
    81% (39)
  • D
    4% (2)

Explanation

Within the CHFI v11 syllabus under Network Forensics and Log Analysis, understanding Cisco router log mnemonics is essential for investigating network-based attacks and policy violations. Cisco devices generate structured log messages that include a facility, severity level, and mnemonic, which together describe the event detected by the device. The mnemonic %SEC-6-IPACCESSLOGP specifically indicates that a packet (TCP or UDP) matched an IP Access Control List (ACL) rule and was logged accordingly. The "SEC" facility denotes a security-related event, the severity level "6" represents an informational message, and "IPACCESSLOGP" confirms that the log entry was generated due to an ACL permit or deny rule matching a packet. This type of log is commonly used in forensic investigations to trace suspicious traffic, identify unauthorized access attempts, and correlate firewall or router behavior with other network logs.

Topics

#Cisco router logs#ACL log mnemonics#TCP/UDP filtering#network log analysis

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