AnyConnect 3.1 Windows - latest versions

The Cisco AnyConnect ® Secure Mobility Client consistently raises the bar in remote access technology by making the experience more seamless and secure than ever. The AnyConnect Secure Mobility Client provides a secure connectivity experience across a broad set of PC and mobile devices. As mobile workers roam to different locations, an always-on intelligent VPN enables the AnyConnect Secure Mobility Client to automatically select the optimal network access point and adapt its tunneling protocol to the most efficient method, such as Datagram Transport Layer Security (DTLS) protocol for latency-sensitive traffic - for example, voice over IP (VoIP) traffic, or TCP-based application access.

http://www.cisco.com/c/en/us/td/docs/security/vpn_client/anyconnect/anyconnect31/release/notes/anyconnect31rn.html