A possible security problem in the home network is the function of some DSL routers, WLAN devices do not communicate with each other. This may prevent attacks of a hacked Smart TV on the notebook, but it also blocks the communication between the tablet and the Wi-Fi printer, or between the Fire TV and the Wi-Fi NAS.
Lesetipp: Increase WLAN range
A bit further goes the guest mode of many DSL routers, which spies up its own network, no communication into the internal network (neither WLAN nor LAN) permits and traffic only outwards. The guest network can in many cases serve as the lack of a firmware update unsafe Smart TV with Programminfos to supply without risk to the rest of the home network.
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