Remote access vendors are notoriously opaque as to how their "secure" remote access (SRA) technology actually works. This is counter-productive in a world where the clear majority of practitioners are worried about the security of their SRA solutions. In this presentation we survey the field, digging into how each technology works. We compare each technology to a spectrum of cyber attacks, identifying those attacks each technology does (and does not) defeat with a high degree of confidence, and why, so that practitioners can compare the security of their solutions to credible threats. And we review the latest CISA, NCSC and other guidance for OT SRA in light of these attack scenarios. Expected Outcome: A nuanced understanding of the capabilities and limitations of SRA technology. Intended Audience: Network architects, SCADA system architects, OT cybersecurity practitioners.