DTLS (Datagram Transport Layer Security)

The UDP version of TLS. DTLS provides encrypted transport over a connectionless protocol — the case for VPNs (NetScaler DTLS), IPsec, and real-time traffic. Since UDP guarantees neither ordering nor delivery, DTLS handles retransmission, sequencing, and reassembly itself. Security is equivalent to TLS — but it is a separate code path: a DTLS flaw is not a TLS flaw (see NetScaler CVE-2026-88772, which only applies when DTLS is enabled).