Which version of ZTunnel improves transport speed by supporting DTLS?

ZTunnel 2.0 provides an improvement in transport speed through its support for Datagram Transport Layer Security (DTLS). DTLS is designed to provide the same security guarantees as Transport Layer Security (TLS) but in a way that is more suited for transport over datagram protocols, like UDP. This allows for reduced latency and increased speed because it avoids some of the overhead associated with traditional TLS connections.

By implementing DTLS, ZTunnel 2.0 can efficiently handle the demands of modern applications that require quick transmission of data while still ensuring that security is maintained. This is particularly beneficial for environments with varying network conditions where maintaining performance is critical, such as in remote work scenarios or mobile access.

In contrast, the other options either do not incorporate DTLS support or are earlier iterations that do not offer the same enhancements in speed. ZTunnel 1.0 lacks this improved transport layer characteristic, and the local proxy and route-based modes are configurations or features of ZTunnel that do not directly relate to the core transport speed improvements offered by DTLS in ZTunnel 2.0.