NETGEAR Nighthawk AX8 8 Stream Wi-Fi 6 DOCSIS 3.1 Cable Modem and Multi-Gigabit Router - Manual (Page 104)

9. In the Windows Installer section of the page, double-click the
openVPN-install-xxx.exe link.
10. Download and install the Open VPN software on your computer, click the
openVPN-install-xxx.exe file.
11. Click the Next button.
12. Read the License Agreement and click the I Agree button.
13. Leave the check boxes selected as shown, and click the Next button.
User Manual 104 Use VPN to Access Your Network
Nighthawk AX8 AX6000 WiFI Cable Modem Router Model CAX80