What are the differences between IKE and manual key VPN?

The only difference between IKE and manual key is how the encryption keys and SPIs are determined.

The only difference between IKE and manual key is how the encryption keys and SPIs are determined. For IKE VPN, the key and SPIs are negotiated from one VPN gateway to the other. Afterward, two VPN gateways use this negotiated keys and SPIs to send packets between two networks. For manual key VPN, the encryption key, authentication key (if needed), and SPIs are predetermined by the administrator when configuring the security association.

The only difference between IKE and manual key is how the encryption keys and SPIs are determined. For IKE VPN, the key and SPIs are negotiated from one VPN gateway to the other. Afterward, two VPN gateways use this negotiated keys and SPIs to send packets between two networks. For manual key VPN, the encryption key, authentication key (if needed), and SPIs are predetermined by the administrator when configuring the security association. IKE is more secure than manual key, because IKE negotiation can generate new keys and SPIs randomly for the VPN connection.

I travel a lot and often connect to Wi-Fi at airports and hotels. I know that this can be unsafe. Share some tips: how can I better protect my personal data? What security measures do you use when traveling?

When traveling, the best solution is to use a VPN to ensure a secure network connection even in unfamiliar networks. This is especially useful for banking and email. I hope I helped you with my information.