20
CONTENTS
Notice the outlet numbering difference for non-administrative users vs the previous generations of EPCR/LPC con-
trollers. In LPC9, non-administrative users see all outlets accessible to them numbered consecutively starting from
1; previously the indices used to match those seen by the administrator. Naive outlet state manipulation links like
http://192.168.0.100/outlet?3=ON
will work differently depending on the user you're logged in as;
however, certain use cases may benefit from this change. Consider using the
if you need consistent
outlet manipulation.
The next group is comprised of miscellaneous settings for access control.
Access settings
Allow legacy plaintext login
methods
Hide user passwords
Hide WiFi password
Disable local keypad
Show device name on login
page
Submit
Access settings
If you need to access the controller with clients supporting Basic authentication, or by browsers without JavaScript,
you may need to enable the "Allow legacy plaintext login methods" setting. Those methods transmit passwords over
the network and are thus considered insecure. This includes Basic authentication over HTTPS, which is secure
relative to Basic authentication over HTTP, but relies solely on TLS for security, which is considered risky by some
experts. DLI Ethernet Sender should not require this setting.
The "Hide user passwords" and "Hide WiFi password" settings configure whether clients should be able to read
back the relevant values; this may be a security issue if there are untrusted administrator users.
The "Disable local keypad" setting is designed for untrusted physical environments. When enabled, the LCD will
briefly indicate that the
is disabled on each keypress and otherwise ignore it.
Note that this still leaves the
available to an attacker.
The "Show device name on login page" setting can be used to control if unauthenticated users can see the device
name (it used to be controllable by a space character preceding the device name in previous controller models, but
is now an individual setting). This may be a convenience, but also a possible security issue.
6.7
Miscellaneous settings
The following setting group controls aspects of data presentation of the unit.
Miscellaneous Settings
Display LCD text in all CAPS
Meter and plot default
image format:
Submit
PNG
Miscellaneous settings
DLI LPC9 User’s Guide: 1.7.24.0
Summary of Contents for LPC9
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