![]() ![]() Upon receipt, the peer VPN gateway decrypts the content and relays the packet toward the target host inside it’s private network. ![]() VPN gateway (ISR, ASA) is responsible for encapsulating and encrypting outbound traffic over the Internet to a peer VPN gateway.VPN hosts don't require VPN client software.IPsec Introduction IPsec Site-to-Site VPN The connectivity but you want to secure the transmission Cisco GET VPN: transport-based (Private WAN, MPLS, no Internet) you already have.Cisco DMVPN: hub-and-spoke, spoke-to-spoke, full mesh, partial mesh.Cisco Easy VPN: remote access, hub and spoke.Receiver decrypts the hash using the sender's public key. Digital Signature based on PKI: Senders encrypts the hash by his private key then.If hacker modifies the data, he cannot modify the hash without the pre-shared key. Sender hashes the data then used pre-shared key to authenticate. Data Integrity and Authentication of the sender.Diffie-Hellman (Group 1, Group 2, Group 5, Group 10).Digital signatures bring Data Integrity and authentication into the mix. Data Origin Authentication: the sender.The data, he can also modify the hash accordingly. We don't use hash by itself only to transmit, because if hacker wants to modify.Slower than symmetrics' and are CPU burden. We usually don't use asymmetric for data encryption because they are thousand times Application: RSA usually used in digital signatures or key management.Data Confidentiality: Data cannot be intercepted by a hacker. ![]()
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