I've observed that an anonymous client has been connected as a wired client with my router TP-Link Archer C7. In fact my pc only is connected with router (WAN) as a wired client. How can it be possibl

hi all my friend (who is almost 1 km far away from my home) is using broadband internet connection and i want to use his own internet through any wifi. I have searched and found "PHAROS CPE220" but st