Alcatel Operating System (AOS) does not require a password for accessing the telnet server
by Volker Weber
CERT Vulnerability Note VU#181721 gives us a good reason to never buy anything from Alcatel again.
The OmniSwitch 7700/7800 running Alcatel Operating System (AOS) version 5.1.1 has TCP port 6778 listening as a telnet server. This gives anyone access to the OmniSwitch's Vx-Works operating system without requiring a password.