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9: Setup Mode: Advanced Settings
To configure AES encryption on the Micro125:
Enable Encryption (N) Y
Key length in bits (0): 128
Change Keys (N) Y
Enter Keys: **-**-**-**-**-**-**-**-**-**-**-**-**-**-**-**-
1. W
hen prompted to enable encryption, select Y.
2. When prompted, enter the encryption key length. The Micro125 supports 128-, 192-, and
256-bit encryption key lengths.
3. When prompted to change keys, select Y.
4. At the Enter Keys prompt, enter your encryption key. The encryption keys are entered i
n
hex
adecimal. The hexadecimal values are echoed as asterisks to prevent onlookers from
seeing the key. Hexadecimal values are 0-9 and A-F.
For a 128-bit key length, enter 32 hexadecimal characters.
For a 192-bit key length, enter 48 hexadecimal characters.
For a 256-bit key length, enter 64 hexadecimal characters
5. Continue pressing Enter until you return to the Change Setup menu.
6. From the Change Setup menu, select option 9 to save and exit.
Encryption only applies to the port selected for data tunneling (default 10001), regardless of
whether you are using TCP or UDP.
Generally, one of these situations applies:
Encrypted Micro125-to-Micro125 communication. Be sure to configure both Micro125
devices with the same encryption key.
Third-party application to Micro125-encrypted communication: Micro125 uses standar
d
AES encryption protocols. To communicate successfully, products and applications on
t
he peer side must use the same protocols and the same encryption key as the Micro125
.
Lant
ronix Secure Com Port Redirector provides an encrypted connection from Windows-
based applications to the Micro125. Information about SCPR is available on our web site,
www.lantronix.com/device-networking/utilities-tools/scpr. A 30-day trial version of SCPR
is available.
Note: Developers can license the Lantronix Encryption Library Suite. See
www.lantronix.com/device-networking/utilities-tools.
Enable Enhanced Password
This setting defaults to the N (No) option, which allows you to set a 4-character password that
protects Setup Mode by means of Telnet and web pages. The Y (Yes) option allows you to
set an extended security password of 16-characters for protecting Telnet and Web Page
access.
Enable Enhanced Password (Y) ? _
Micro125 User Guide 60