User`s manual

Tracker3 User’s Manual 19
exit safe mode, use the RESET command or power off the tracker after removing
the jumper used to enter safe mode.
The use of the default configuration is temporary. Normal operation will be
resumed when safe mode is exited. To overwrite the active configuration with
the saved defaults, use the RESET DEFAULT command. The tracker need not be
in safe mode to restore defaults.
16. Authentication
In addition to the security authorization list, remote access to the Tracker3 can be
controlled through a more secure one-time password mechanism. This
mechanism is enabled by setting PWAUTH ON .
To set up one-time password authentication, use the command SECRET followed
by a pass phrase of at least 16 characters. The device will use this pass phrase to
generate a 128-bit key that is stored in nonvolatile memory. The password
sequence counter is set to 0 when the key is created.
The PASSLIST command can then be used to generate a list of 4-character one-time
passwords, each listed with a unique sequence number. These passwords must
be used in the specified order. You can print out this list and cross off each
password as it’s used.
To use a password, append it to the CMD prefix at the start of the command
message. For example, if the next valid password is ‘SBCY’, the message
“ CMDSBCY VERSION ” will execute the VERSION command.
While it should be virtually impossible for someone to determine the next
password without knowing your pass phrase, the system is not foolproof. Be
sure not to use the same pass phrase on two different devices, because an
eavesdropper who hears a password used on one device (or who retrieves an old
message from an online database) could potentially use the same password on
the other unit.
cmd:secret The quick brown fox jumps over the lazy dog.
Set.
cmd:passlist 24
0:C0EP 1:U60T 2:8JES 3:BVBN 4:Z2ZC 5:TEAR 6:VA5S 7:EV1F
8:JCBX 9:NE8G 10:NAAM 11:P1Y8 12:ZJ59 13:H654 14:KSBB 15:PDM8
16:VM89 17:GTNW 18:CW52 19:B7ZX 20:X4DF 21:Z5HF 22:CNNU 23:A8FS