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What is IKEv2

IKEv2 (Internet Key Exchange version 2) is a VPN encryption protocol used to set up a Security Association in the IPsec protocol suite. IKEv2 connection method generates encryption keys and guarantees a safe data process between your device and the VPN server you’re connected to.

NordVPN uses NGE (Next Generation Encryption) in IKEv2/IPsec. The ciphers used to generate Phase1 keys are AES-256-GCM for encryption, coupled with SHA2-384 to ensure integrity, combined with PFS (Perfect Forward Secrecy) using 3072-bit Diffie Hellmann keys. IPsec then secures the tunnel between the client and server using the strong AES256.

You can set up an IKEv2 connection manually on different devices. Guides for different devices can be found here:

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