Chapter 3: Operation
98-148232-E Security setup 34
Security setup
Overview of security measures
Since the EXPLORER 540 is most likely placed in remote areas without direct supervision, it is
important to protect it against unauthorized access.
The EXPLORER 540 has the following security measures:
• User and administrator passwords for the web interface.
• Admin password for AT shell and SMS control.
• White list for SMS control (list of trusted phone numbers).
•MAC filtering.
• SIM personalization.
Optional SIM lock (lock to provider) and optional PIN lock (lock to EXPLORER 540
terminal).
• Disable Reset button.
One of the functions of the Reset button is to reset to factory default, which also resets
the administrator password. This function can be disabled using the web interface.
You can set up these security measures in the web interface or with AT commands. see the
next sections for details.
To set up the security with AT commands
For details on how to send AT commands to the EXPLORER 540, see To access the terminal
using AT commands on page 24.
For details on syntax and parameters for the AT commands, see AT commands on page 132.
Do as follows:
1. Disable administration lock:
AT_ICLCK=AD,0,<password>
Example: AT_ICLCK=AD,0,admin
When you get an OK reply you have administrator access to the AT shell.
2. Set new administrator password:
AT_ICPWD=AD,<old password>,<new password>
By default any phone number can access the EXPLORER 540 with an SMS! To
protect against unauthorized access, change the remote SMS password and
make a list of trusted phone numbers. See To set up remote access with SMS on
page 86 and To set up the security with AT commands below.
The password must be 5 to 15 characters long and cannot contain spaces. Avoid
special characters. Accepted characters are: A through Z (uppercase characters), a
through z (lowercase characters) and 0 through 9 (numeric characters).
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