Request for OpenVPN DCO Support on USG Flex H for VPN Performance Enhancements

Zyxel_Tina

User @Asgatlat would like to propose adding support for OpenVPN Data Channel Offload (DCO) on USG Flex H series. Currently, OpenVPN for SSL VPN is supported, but DCO functionality is not available.

OpenVPN DCO changes how Access Server handles the data flowing through the VPN tunnel. With DCO, data channel encryption and decryption are offloaded to kernel space, allowing the kernel to handle the work instead of dealing with it in user space. This saves on copy operations from kernel to user space and back and uses multi-threading.

Supporting OpenVPN DCO on USG Flex H series devices could lead to better VPN performance and scalability, benefiting a broad range of users who rely on secure, high-speed VPN access.

This suggestion originated from the post found here:

Is data channel offload (DCO) driver supported for openvpn on FlexH series? — Zyxel Community

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