Which set of key security components of authentication, encryption, and integrity is used to establish an IPsec tunnel in the Cisco SD-WAN solution?

This option uses a weaker 1024-bit key and AES-128 cipher, and HMAC-MD5 for integrity, which are generally less secure than the commonly recommended standards for enterprise SD-WAN.

This option uses a weaker 1024-bit key and HMAC-MD5 for integrity, both of which are not as strong as 2048-bit keys and HMAC-SHA1 or higher for robust security.

Cisco SD-WAN typically employs strong cryptographic standards for IPsec tunnels. This includes using a 2048-bit key for robust authentication, AES-256 as the encryption cipher for strong data confidentiality, and ESP (Encapsulating Security Payload) with HMAC-SHA1 for ensuring data integrity and authenticity. These parameters represent a secure and commonly used set of IPsec components.

While using a strong 2048-bit key and HMAC-SHA1, the AES-128 cipher for encryption is less secure than AES-256, which is typically preferred for strong IPsec encryption.