Allied Telesis, a Japan-based maker of switches, routers and other networking devices, has a fix: guaranteed backdoors for every product. A support page titled Backdoor Password for Allied s Devices turned up on Google. The page, labeled ***INTERNAL ONLY*** was written to answer customer questions like How do I obtain a backdoor password for my device?’ It includes instructions on accessing a built in Backdoor function on any AlliedTelesis device.
Source: https://threatpost.com/hardware-vendor-offers-backdoor-every-product-052611/75275/