Allied Telesis – no backdoor in devices
Allied Telesis denies charges that it has put backdoors into all of its products. Recently, the Japanese manufacturer of network equipment accidentally published an internal support document containing information about a "backdoor password for Allied Telesis devices." Now, the company says the description is misleading and that the tools it published merely serve to reset the administrator password, which it says is a common function.
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump