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GCIH · Question #70

Against which of the following does SSH provide protection? Each correct answer represents a complete solution. Choose two.

The correct answer is B. IP spoofing C. Password sniffing. SSH uses cryptographic authentication and encryption to defend against identity-based and eavesdropping attacks, but does not address network-layer flooding or availability threats.

Incident Response & Cyber Kill Chain

Question

Against which of the following does SSH provide protection? Each correct answer represents a complete solution. Choose two.

Options

  • ADoS attack
  • BIP spoofing
  • CPassword sniffing
  • DBroadcast storm

How the community answered

(39 responses)
  • A
    5% (2)
  • B
    87% (34)
  • D
    8% (3)

Why each option

SSH uses cryptographic authentication and encryption to defend against identity-based and eavesdropping attacks, but does not address network-layer flooding or availability threats.

ADoS attack

SSH operates at the application layer and cannot prevent DoS attacks, which exploit the network and transport layers by overwhelming a host with traffic before SSH even has a chance to authenticate.

BIP spoofingCorrect

SSH authenticates remote hosts using public-key cryptography, which prevents IP spoofing by ensuring the connecting system can prove possession of the private key corresponding to its known public key - a forged source IP cannot pass this verification.

CPassword sniffingCorrect

SSH encrypts the entire session including credentials using symmetric encryption negotiated during the handshake, making it impossible for a network sniffer to recover plaintext passwords from captured traffic.

DBroadcast storm

Broadcast storms are a Layer 2 switching problem caused by loops in the network topology and are addressed by protocols like STP - SSH has no mechanism to influence or prevent them.

Concept tested: SSH protocol security protections and limitations

Source: https://www.rfc-editor.org/rfc/rfc4251

Topics

#SSH protections#IP spoofing mitigation#password sniffing#encrypted protocols

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