Oil – 5W30, 6.1 quarts or 5.8l
Oil drain plug torque: 38Nm / 28 lb/ft
Oil Filter Housing – 25 Nm / 18 lb/ft
Step by Step instructions:
http://volvoxc90site.com/2004-volvo-xc90-oil-change-procedure-25t/
Video:
https://www.youtube.com/watch?v=759AWWchIdE&feature=youtu.be
You can generate a self-signed certificate online here:
http://www.selfsignedcertificate.com/
This will generate a two files – a certificate and a key.
If you are using IIS server you need to convert these to .pfx. For this you can use the SSL Converter here:
https://www.sslshopper.com/ssl-converter.html
http://billauer.co.il/ipmasq-html.html
https://www.howtogeek.com/177621/the-beginners-guide-to-iptables-the-linux-firewall/
https://blog.ssdnodes.com/blog/tutorial-installing-openvpn-on-ubuntu-16-04/
To configure iptables look here:
https://www.digitalocean.com/community/tutorials/how-to-set-up-an-openvpn-server-on-ubuntu-16-04
https://linode.com/docs/networking/vpn/configure-openvpn-access-server-to-tunnel-traffic/
https://linode.com/docs/networking/vpn/install-openvpn-access-server-on-linux/