https://rescueshell.com/blog/ Field notes from running a shell relay for machines behind other people's firewalls. en https://rescueshell.com/blog/field-devices-behind-other-peoples-firewalls/ https://rescueshell.com/blog/field-devices-behind-other-peoples-firewalls/ Fri, 13 Nov 2026 00:00:00 GMT We build devices that run in other people's buildings. Each one is a Raspberry Pi running a custom Buildroot Linux image, and we have a fleet of them in... https://rescueshell.com/blog/why-our-agent-is-not-a-vpn/ https://rescueshell.com/blog/why-our-agent-is-not-a-vpn/ Fri, 13 Nov 2026 00:00:00 GMT The first question a customer's IT department asks is "is this a VPN?". The honest answer is no, and the reasons are the whole design.