Telos user manual Security Levels, Hello, ZephyrExpress

•The terminal program’s baud rate settings. If you have the latter problem, you will probably see some “garbage” text. Verify the setting in the System: baud rate item (default is 9600 baud), or try different rates at your computer.

•COM port selection at the computer.

ZephyrExpress echoes any data sent to it, to verify proper operation: If a connection is properly made, anything you type will be returned to you. Try typing something:

>>Hello, ZephyrExpress!

You should see the letters on your computer’s screen as you type them.

If you see double letters as you type,

>>HHeelllloo,, ZZeepphhyyrrEExxpprreessss!!

be sure to turn off Local Echo on your computer’s terminal program.

ZephyrExpress commands are terminated by a Return character (ASCII CR, Decimal 13, Hex 0D... or just hit the Enter or Return key on your computer). When you send a Return, the system tries to analyze what you’ve sent and respond to it:

ERROR: Unknown command: hello,

>>

If ZephyrExpress doesn’t understand what you’ve sent, it’ll let you know. It will also respond Unknown command if it doesn’t think you don’t have a high enough security level to use a specific command.

Security Levels

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ZephyrExpress has two Security Levels, User and Expert. Each supports one password. You must log in at one of these levels, using its password, before you can remotely control the system. When you’re finished with a session you can log out, disabling remote contro until the next login.

DEEP TECH NOTE

We included the log in/out procedure so you can leave ZephyrExpress connected to a modem without fear of a hacker changing its settings.

HOT TIP!

The only difference between levels is that Expert has access to a few additional remote diagnostic tools. You can use the two levels instead to support two different passwords.

•The default password for User-level control is user.

•The default password for Expert-level control is expert.

You can change the password to something less obvious, using the command detailed later in this section. Passwords are case-sensitive: user and expert are not the same as User or ExPeRt.

SYSTEM FUNCTIONS 8-5