Is there a modbus TCP with TLS ?

[schnitzlein]

Hi,

is there currently some ongoing task to implement the modbus TCP with TLS Support? as documented in modbus org?
https://modbus.org/docs/MB-TCP-Security-v21_2018-07-24.pdf

Can I find it some where? would be really cool!

greetings

[schnitzlein]

Maybe I am overseeing something...
But it would be cool if I can use libmodbus with TLS support, because we live in 2022 and Encryption is mostly mandatory.

@stephane do you know maybe any project which currently supports modbus TCP + TLS ?
Any kind of information would be helpful :)
(commercial lib ... secret at ... or any open source lib containing it)

My research results was only that I was able to find a port for Arduino OS seems like they have it for ESP8266, which is quite specific. I am looking more for a generic solution for Linux.

Or ... write it by myself, if there is none solution yet.

[stephane]

No but it could be a good fit for promodbus spin-off before merging it later in libmodbus...

[alongL]

@schnitzlein Before it is ok, maybe you can use some ssl tunnel software to solve this problem.
for example: https://github.com/ghostunnel/ghostunnel etc.

[seboste]

@stephane Is there any ongoing/planned work regarding this in the promodbus spin-off as you insinuated earlier? Thanks.