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.
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)- A5% (2)
- B87% (34)
- D8% (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.
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.
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.
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.
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
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