@Kragdob What most probably happens is that with VPN client on your Android device you're bypassing the Parenatl Control feature. Exclamaition mark means that you can't resolve the websites IP...

@Jondas Try these wireless security settings: If this doesn't improve things, set these DNSs in Internet connection settings: If the issue persists then use this article to select less crowded...

@PRATUL If your router has been provided to you by your ISP and you don't see a Gest Network under Advanced tab, most probably its FW has been customized for your ISP.

@mfran2002 Glad that you've sorted this out...) Cheers.

mfran2002 wrote update: step1: to block the traffic from the webserver to the home lan, I have enabled a rule on the firewall of the router tplink deny ALL from webserver lan (192.168.1.0/24) to home...

@mfran2002 You should set TD-W9970 in Wireless Router mode. Thus, when connected on its LAN4/WAN port to your ISP router LAN4 port it will separate its LAN in a different subnet. You'll introduce a...