IPsec with IKEv2 is the NCSC’s recommended alternative for secure remote access. This protocol encrypts and authenticates each packet of data, using keys that are refreshed periodically. Despite acknowledging that no protocol is entirely free of flaws, the NCSC believes that IPsec with IKEv2 significantly reduces the attack surface for secure remote access incidents, especially due to its reduced tolerance for configuration errors compared to SSLVPN.