I'm about to have a guy onsite to troubleshoot a PLC (I'm trying to help troubleshoot remotely) and he doesn't have the proper software. The software take hours to download & install. Usually I have the guys install the software ahead of time and then use TeamViewer to take over their laptop but I didn't get any advance notice this time. So I'm wondering if there is a VPN or something he can install quickly that would let me just use his laptop as a conduit so that I can connect to the PLC and do the troubleshooting with the software on my own laptop. Any suggestions?