I have purchased Tp-Link WR841N router. My query is it necessary to turn on DOS protection in the router. And what are ICMP, UDP and TCP settings. In ICMP, UDP & TCP settings which parameters has to...

@Kevin_Z When I try to access the internet on Oppo F11 pro handset the device connected to the internet but does not provide internet access.

Router connects to the internet. But some devices not connected to the internet despite of internet is on. I have factory reset the router but still the problem persists. On my Samsung galaxy M30s...