if_ovpn, OpenVPN Data Channel Offload

if_ovpn is the FreeBSD implementation of OpenVPN’s Data Channel Offload (DCO) technology. It optimizes the OpenVPN data flow for increased VPN performance.

This work was paid for by Netgate, and can be found in Netgate’s pfSense plus products.

In this paper we discuss the advantages and disadvantages of DCO as well as some of the if_ovpn design choices. if_ovpn is the FreeBSD implementation of OpenVPN’s Data Channel Offload (DCO) technology. It optimizes the OpenVPN data flow for increased VPN performance.