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GSLC · Question #123

Which of the following statements about a host-based intrusion prevention system (HIPS) are true? Each correct answer represents a complete solution. Choose two.

The correct answer is A. It can handle encrypted and unencrypted traffic equally. D. It cannot detect events scattered over the network. A host-based IPS (HIPS) monitors and protects a single host, giving it visibility into decrypted traffic on that host but limiting it to only local events. It cannot correlate events distributed across multiple network nodes.

Security Architecture & Engineering

Question

Which of the following statements about a host-based intrusion prevention system (HIPS) are true? Each correct answer represents a complete solution. Choose two.

Options

  • AIt can handle encrypted and unencrypted traffic equally.
  • BIt can detect events scattered over the network.
  • CIt is a technique that allows multiple computers to share one or more IP addresses.
  • DIt cannot detect events scattered over the network.

How the community answered

(18 responses)
  • A
    89% (16)
  • B
    6% (1)
  • C
    6% (1)

Why each option

A host-based IPS (HIPS) monitors and protects a single host, giving it visibility into decrypted traffic on that host but limiting it to only local events. It cannot correlate events distributed across multiple network nodes.

AIt can handle encrypted and unencrypted traffic equally.Correct

Because HIPS operates directly on the host after the OS handles decryption, it can inspect both encrypted and unencrypted traffic equally - unlike network-based IPS, which cannot read encrypted payloads in transit without out-of-band decryption capabilities.

BIt can detect events scattered over the network.

Detecting events scattered over the network is a capability of network-based IDS/IPS (NIDS/NIPS), not HIPS, which is scoped to the individual host on which it is installed.

CIt is a technique that allows multiple computers to share one or more IP addresses.

Allowing multiple computers to share one or more IP addresses describes Network Address Translation (NAT), which is a network routing concept entirely unrelated to intrusion prevention systems.

DIt cannot detect events scattered over the network.Correct

HIPS is installed on a single endpoint and monitors only events occurring on that specific host, so it cannot detect or correlate attack activity distributed across multiple systems on the network.

Concept tested: Host-based IPS capabilities and limitations vs network IPS

Source: https://csrc.nist.gov/publications/detail/sp/800-94/final

Topics

#HIPS#host-based IPS#intrusion prevention#encrypted traffic

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