Acronyms
The following acronyms may be used in this document in the description of IP security.
| AES-128-GCM | Advanced Encryption Standard with 128-bit key size in Galois Counter Mode |
| AES-256-GCM | Advanced Encryption Standard with 256-bit key size in Galois Counter Mode |
| AES-CBC-128 | Advanced Encryption Standard with 128-bit key size in Cipher Block Chaining Mode |
| AES-CBC-256 | Advanced Encryption Standard with 256-bit key size in Cipher Block Chaining Mode |
| AH | Authentication Header protocol |
| DH | Diffie-Hellman |
| DPD | Dead Peer Detection |
| ESP | Encapsulating Security Payload protocol |
| IKEv2 | Internet Key Exchange protocol, version 2 |
| IPsec | IP security |
| SA | Security Association |
| SAD | Security Association Database |
| SPD | Security Policy Database |
| SPI | Security Parameters Index (used to identify a SA) |
| TOS | Type of Service field in IPv4 header |
| VTI | Virtual Tunnel Interface |