A security technician is trying to connect a remote site to the central office over...

TheIKE (Internet Key Exchange)Phase 1 handshake error indicates a failure in negotiating a secure connection.

Option A:The IKE hashing algorithm mismatch, including key lengths, often causes such failures. Both VPN devices must agree on compatible algorithms and key lengths for the handshake to succeed.

Option B:Multiple cipher suites do not inherently cause errors; they provide flexibility during negotiation.

Option C:While using a legacy Diffie-Hellman group is less secure, it does not typically cause the handshake to fail unless explicitly rejected.

Option D:Site-to-site VPNs do not use SSL/TLS; they rely on IPSec protocols, making this irrelevant.