IPsec VPN

Encryption

• AES (Advanced Encryption Standard): A strong, fast, and widely used modern encryption algorithm; supports 128, 192, and 256-bit key lengths.
• CAMELLIA: A symmetric encryption algorithm from Japan with security comparable to AES; suitable for both software and hardware implementations.
• NULL_ENC: A mode with no encryption; used only for authentication or testing purposes. Does not provide real data confidentiality.
• SERPENT: One of the AES finalists; offers high security but is slightly slower compared to AES.
• TWOFISH: Another AES finalist; known for its speed and flexibility, particularly preferred in embedded systems.

Authentication

• MD5: Produces a 128-bit hash; fast but now considered weak and not recommended for secure applications.
• SHA1: Produces a 160-bit hash; more secure than MD5 but vulnerable to modern attacks.
• SHA256 / SHA384 / SHA512: Members of the SHA-2 family; generate strong hashes of 256, 384, and 512 bits respectively, and are widely used today.
• AES: Primarily an encryption algorithm, but can also be used for authentication in modes like AES-XCBC within IPsec.

WildCard ID Support, NAT Traversal Support

Wildcard ID support allows the use of flexible identity matches in IPsec VPN connections, enabling adaptable authentication and access control. NAT Traversal enables secure VPN tunneling between networks without being blocked by NAT (Network Address Translation) devices.

IKE v1/v2 Support

Supports both versions of the IKE (Internet Key Exchange) protocols. IKE is used to negotiate security parameters and perform key exchange in VPN connections.

PKI - Public Key Infrastructure Support

PKI provides secure key management and authentication using digital certificates. With PKI support, IPsec VPN enhances secure data transmission and identity verification.

PSK - Pre-Shared Key Support

PSK enables authentication using a shared key agreed upon in advance. In IPsec VPN, both parties must possess the same PSK to establish a secure connection.