I have come across some devices by a companay called "Lantronix" that produce 'Secure Access Servers'.
The description makes it sound like they are physical devices that pretty much do what Terminal programs like PuTTy, SecureCRT, HyperTerminal, etc... do?
"Lantronix console managers provide effective in-band and out-of-band management solutions for IT equipment in data centers, network edges, colocations, remote sites, branch offices, and engineering test labs. These products provide network and system managers unsurpassed ability to securely and remotely manage IT assets including switches, routers, storage devices, security appliances, power management devices (PDU, UPS), telecom equipment, and servers even during system or network outages to maintain business continuity."
Is that the case?