ECCouncil Updated 312-50v13 Exam Questions and Answers by haleema

In CEH v13, IDS effectiveness is closely tied to proper signature tuning and sensitivity thresholds. When IDS alerts are triggered by legitimate user behavior, the most common cause is overly sensitive configuration, resulting in false positives.

False positives occur when normal traffic patterns match intrusion signatures. CEH v13 emphasizes that IDS systems must be calibrated to the organization’s baseline traffic profile. Without tuning, IDS logs become noisy and reduce analyst effectiveness.

Firewall issues (Option A) and outdated IDS signatures (Option B) can cause missed detections, not excessive alerts. Users unintentionally triggering protocols (Option D) is not a root cause but a symptom of misconfiguration.

Thus, excessive IDS sensitivity is the correct explanation.

To start the Computer Management Console from command line just type compmgmt.msc /computer:computername in your run box or at the command line and it should automatically open the Computer Management console.

According to the CEH Network Scanning module, Idle Scanning (Zombie Scanning) is one of the most stealthy reconnaissance techniques. In this method, the attacker uses an idle third-party host (zombie) to probe the target indirectly.

Because all scan packets appear to originate from the zombie system, the true attacker remains hidden. CEH highlights that idle scans:

Are extremely stealthy

Generate minimal traffic from the attacker

Make attribution very difficult

Option B is correct.

Option A (FIN scan) is stealthy but still traceable.

Option C is noisy and easily detected.

Option D describes a Xmas scan, which is detectable.

CEH classifies idle scanning as one of the hardest scanning techniques to trace.

Comprehensive and Detailed Explanation:

LDAP (Lightweight Directory Access Protocol) uses:

TCP/UDP port 389 for standard LDAP communication.

TCP/UDP port 636 for secure LDAP over SSL (LDAPS).

From CEH v13 Courseware:

Module 3: Scanning Networks → Common Ports and Protocols

Incorrect Options:

A: Port 110 = POP3

C: Port 464 = Kerberos change/set password

D: Port 445 = SMB over TCP/IP (used for file sharing)