nerdexam
Cisco

200-201 · Question #25

Which utility blocks a host portscan?

The correct answer is C. host-based firewall. Host-based firewalls operate at the individual device level and can be configured to block or filter incoming and outgoing network traffic based on predefined rules. These firewalls can detect and prevent portscans by blocking incoming connections that scan for open ports on…

Submitted by noor.lb· Mar 6, 2026Host-Based Analysis

Question

Which utility blocks a host portscan?

Options

  • AHIDS
  • Bsandboxing
  • Chost-based firewall
  • Dantimalware

How the community answered

(33 responses)
  • A
    9% (3)
  • B
    3% (1)
  • C
    85% (28)
  • D
    3% (1)

Explanation

Host-based firewalls operate at the individual device level and can be configured to block or filter incoming and outgoing network traffic based on predefined rules. These firewalls can detect and prevent portscans by blocking incoming connections that scan for open ports on the device, thus adding a layer of security to prevent potential attacks or unauthorized access.

Topics

#port scanning#host-based firewall#security tools

Community Discussion

No community discussion yet for this question.

Full 200-201 Practice