CISSP-ISSAP · Question #170
IPsec VPN provides a high degree of data privacy by establishing trust points between communicating devices and data encryption. Which of the following encryption methods does IPsec VPN use? Each…
The correct answer is C. AES D. 3DES. IPsec VPN uses AES (Advanced Encryption Standard) and 3DES (Triple DES) as its symmetric encryption algorithms for securing data in transit - both are supported by the IPsec ESP (Encapsulating Security Payload) protocol to provide confidentiality. MD5 is a hashing/integrity…
Question
IPsec VPN provides a high degree of data privacy by establishing trust points between communicating devices and data encryption. Which of the following encryption methods does IPsec VPN use? Each correct answer represents a complete solution. Choose two.
Options
- AMD5
- BLEAP
- CAES
- D3DES
How the community answered
(14 responses)- A7% (1)
- C93% (13)
Explanation
IPsec VPN uses AES (Advanced Encryption Standard) and 3DES (Triple DES) as its symmetric encryption algorithms for securing data in transit - both are supported by the IPsec ESP (Encapsulating Security Payload) protocol to provide confidentiality. MD5 is a hashing/integrity algorithm, not an encryption method; while IPsec does use MD5 for authentication (HMAC-MD5), it does not encrypt data. LEAP (Lightweight Extensible Authentication Protocol) is a Cisco wireless authentication protocol entirely unrelated to IPsec - it's a distractor from a different domain. For your exam, remember the mnemonic "IPsec Encrypts with A and 3" - AES and 3DES are the two encryption ciphers, while MD5/SHA belong to the integrity (hashing) side of IPsec.
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