Mains pro 1.6.1 Global Guide
8
• The controller web interface at port TCP/80 is based on http, not https, and thus it is intended to be used only
in closed private network infrastructures.
• Avoid exposing the port TCP/80 to the public Internet.
4. MODBUS/TCP
• The MODBUS/TCP protocol (port TCP/502) is an instrumentation protocol designed to exchange data
between locally connected devices like sensors, I/O modules, controllers etc. From it’s nature it does not
contain any kind of security – neither encryption nor authentication. Thus it is intended to be used only in closed
private network infrastructures.
• Avoid exposing the port TCP/502 to the public Internet.
5. SNMP
• The SNMP protocol (port UDP/161) version 1,2 is not encrypted. Thus it is intended to be used only in closed
private network infrastructures.
• Avoid exposing the port UDP/161 to the public Internet.
1.4 Document history
Revision number Related SW Date of issue Author
9 1.6.1 26.4.2019 Petra Piclová
8 1.6.0 13.3.2018 Petra Piclová
7 1.5.0 16.1.2015 Petra Piclová
6 1.4.1 15.11.2013 Petra Piclová
5 1.4.0 30.10.2013 Petra Piclová
4 1.3.0 30.8.2012 Tomáš Jelen
3 1.2.0 20.4.2012 Tomáš Jelen
2 1.1.0 2.11.2011 Tomáš Jelen
1 1.0.0 18.6.2010 Tomáš Jelen
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