1. VPN (Virtual Private Network): A technology used to secure internet access over the internet. It allows users to access remote servers or applications from inside their personal or work computer.

2. ISO: An image file format used to represent images, icons, and other graphical elements. ISOs can be used for various purposes, including document management, software updates, and more.

If you meant something else by "vpn iso," please provide more context, and I'll be happy to help!