VPN

Cisco is your router, check the router settings, see ->Recommended settings for Wi-Fi routers and access points

Recommended settings for Wi-Fi routers and access points - Apple Support

i have found Cisco name in the VPN setting and All Traffic Thru switched on. ( I can not switch it off?)

do you know how i can turn off the send all traffic thru button?

I switch it off and it says VPN settings cannot be saved??

What happens if you choose Manual or Auto?

Then try to turn Off Send All Trafic?