session_09_vpn__ipsec__and_tls_101908

Key management internet key exchange ikev2 allows

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Unformatted text preview: even in locations where the export, import or use of encryption to provide confidentiality is regulated. • Encapsulation Security Payload (ESP) — Provides integrity, authentication, and confidentiality to IP datagrams. Key Management • Internet Key Exchange IKEv2 — Allows users to agree on authentication methods, encryption methods, keys to use, and key duration. — Key exchange could be manual or automated. VPN IPsec IKE v2 TLS M. Mogollon – 01/08 - 14 • The basic key management mechanism is the Diffie-Hellman key exchange algorithm. IKEv2 supports perfect forward secrecy for keys, identity protection, authentication, user-defined abstract group structures for use with the Diffie-Hellman algorithm, key updates, and incorporation of keys distributed via out-of-band mechanisms. • There are currently two ways to handle key exchange and management within IPsec’s architecture: manual and automated keying. Both of these methods are mandatory requirements of IPsec. 14 VPN, IPSec and TLS IP Security Architecture • — — — • • Encapsulation Security Payload Protocol AH is used to authenticate. ESP is used to encrypt and to authenticate. Algorithms for encryption and authentication — — Symmetric encryption algorithms. Keyed hash algorithms. Encryption Algorithm Key Management Protocols — IPsec Databases (SPD, SAD, PAD) ESP/AH Engine Information shared between two Gateways on how to secure communications. Security Protocols — — • Security Policy Database (SPD) Security Association Database (SAD) Peer Authorization Database (PAD) Security Associations — • IP Packets IPsec Databases Authentication & Integrity Algorithms Key Management Manual and Automated VPN Authentication Header Protocol IPsec IKE v2 TLS M. Mogollon – 01/08 - 15 • IPsec Databases o Security Policy Database (SPD) o Security Association Database (SAD) o Peer Authorization Database (PAD) • Security Associations o Information shared between 2 Gateways on how to secure a communication. • SAs has three parameters: o Security Parameter In...
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This note was uploaded on 05/26/2010 for the course TECH 6350 taught by Professor Mogollon during the Spring '10 term at University of Arkansas for Medical Sciences.

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