Digi TX40 User Manual page 760

Services
The default is readwrite.
iv. Add additional topics:
(config service mqtt client 0 topic_acl 0)> add .. .. topic_acl
end
(config service mqtt client 0 topic_acl 1)>
v. Repeat the above steps to set the topic and access type.
11. Set the encryption:
a. Return to the root of the configuration:
(config service mqtt client 0 topic_acl 1)> ...
(config)>
b. Set the encryption type:
(config)> service mqtt encryption type value
(config)>
where value is either:
none
n
psk
n
If psk is used:
a. (Optional) Set a string that identifies the listener and is sent to the clients:
b. Enable the PSK identity sent by the client to be used as its username:
c. Set the pre-shared keys:
TX40 User Guide
n deny
n read
n readwrite
n write
(config)> service mqtt encryption identifier string
(config)>
(config)> service mqtt encryption use_identity_as_username true
(config)>
i. Add a pre-shared key:
(config)> add service mqtt encryption psk end
(config service mqtt encryption psk 0)>
ii. Set the identity sent to the client:
(config service mqtt encryption psk 0)> indentity value
(config service mqtt encryption psk 0)>
Use the MQTT broker service
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