How to keep device connected to lan but block its access to the cloud/web
I have an inverter and I managed to read its data into my smart home system using the modbus protocol. Now I want to keep being able to read its data, so keeping it connected to the lan and accessible by other devices, but block it from accessing the web/internet, so that the data is not sent to the cloud (as a matter of privacy).
From all that I could read my router seems to only be able to totally block the access of a device to the internet AND LAN via the advanced -> security -> access control tab. I would also say that the modbus query is on port 502 of the inverter. Any help in the form of a step-by-step solution is greatly appreciated 
Hi, you may try Service Filtering.With Service Filtering, you can prevent certain users from accessing the specified service, even block Internet access completely.
1. Log into the web-based interface via http://tplinkmodem.net
2. Go to Advanced >Security > MAC Filtering > enable Service Filtering>Select Service Type as Any(ALL) >Select Starting Port as 1, Ending Port as 65535 > then the IP address obtained by your smart home system may have no access to the internet.
Hi, you may try Service Filtering.With Service Filtering, you can prevent certain users from accessing the specified service, even block Internet access completely.
1. Log into the web-based interface via http://tplinkmodem.net
2. Go to Advanced >Security > MAC Filtering > enable Service Filtering>Select Service Type as Any(ALL) >Select Starting Port as 1, Ending Port as 65535 > then the IP address obtained by your smart home system may have no access to the internet.