---
title: 'Video: OpenVPN Data Channel Offload (DCO)'
canonical: https://openvpn.net/as-docs/videos/video--dco-overview/
product: Access Server Docs
description: Increase Access Server performance with OpenVPN DCO. Encryption and decryption of the data channel now happen in the kernel space.
---

# Video: OpenVPN Data Channel Offload (DCO)

This video shows how DCO moves the tasks of encrypting and decrypting the data channel to the kernel space. This shift reduces the need for copy operations between kernel and user spaces and takes advantage of multi-threading.

|  |  |
| --- | --- |
| **Date published:** | Aug 07, 2023 |
| **Functionality covered:** | The OpenVPN DCO module |
| **Description** | An overview of OpenVPN DCO. How to enable OpenVPN DCO on Access Server. How to enable OpenVPN DCO on OpenVPN Connect. The user experience before turning on DCO. The user experience after turning on DCO. |
| **Access Server version** | 2.12.0 |
| **Length** | 11:11 |

---

Prev: [Video: Access Server Access Control](https://openvpn.net/as-docs/videos/video--access-control.md)
Next: [Video: Introduction to OpenVPN Data Channel Offload](https://openvpn.net/as-docs/videos/video--dco-intro.md)
Index: https://openvpn.net/as-docs/llms.txt