Never set all of the "Interface" fields ("http", "https", "telnet",
"SSH", "Maintenance", "Maintenance-Secure", and "ICMP") to
"Disable". If this is done, network access to the device becomes
impossible.
If the device becomes inaccessible in this way, pressing the
Controller Enclosure's IP RESET Switch twice in succession
within a two second interval will reset it to its factory default
settings, and reallow network access.
--
trey @ gépház