Gude Expert Net Control 2302, Manual

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Expert Net Control 2302 © 2021 GUDE Systems GmbH
Specifications
conveyed by the supplied data within the trap.
MQTT published data
Messages on the MQTT channel are sent in JSON format.
Example switch a port: "{"type": "portswitch", "idx": 2, "port": "2", "state": 1, "cause":
{"id": 2, "txt": "http"}, "ts": 1632}"
Console Push Messages
Push messages can be activated on the console channels (Telnet, SSH or serial con-
sole), which output sensor values at timed intervals (every n seconds) or as of a con-
figurable change in the magnitude of the sensor value on that channel. The generated
message always starts with a "#" and ends with a CR/LF.
Example: Switch a port: "#port 2 ON"
If you open a telnet or SSH connection, the push messages are either preconfigured,
or you switch on the push messages temporarily with "console telnet pushmsgs set
1" (or "console ssh pushmsgs set 1"). From now on, push messages will be sent asyn-
chronously on this channel. The asynchronous nature of the messages can cause
problems on a connection if you send commands yourself at the same time. There are
then the possibilities:
· Filter all incoming characters between "#" and CR/LF
· or open a second channel (Telnet, SSH, serial) and switch on the push messages
there.
4.3 IP ACL
IP Access Control List
The IP Access Control List (ACL IP) is a filter for incoming IP packets. If the filter is
active, only the hosts and subnets whose IP addresses are registered in the list, can
contact via HTTP or SNMP, and make changes. For incoming connections from unau-
thorized PCs, the device is not completely transparent. Due to technical restraints, a
TCP/IP connection will be accepted at first, but then rejected directly.
Examples:
Entry in the IP ACL Meaning
192.168.0.123 the PC with IP Address "192.168.0.123" can access the device
192.168.0.1/24 all devices of subnet "192.168.0.1/24" can access the device
1234:4ef0:eec1:0::/64 all devices of subnet "1234:4ef0:eec1:0::/64" can access the device
If you choose a wrong IP ACL setting and locked yourself out, please activate the
Bootloader Mode and use GBL_Conf.exe to deactivate the IP ACL. Alternatively, you
can reset the device to factory default.