> Why do macs show all the neighbor's televisions in the airplay menu?
That's a feature that can be configured on the TV/AirPlay receiver. They've configured to allow streaming from "Anyone", which is probably the default. They could disable this is setting and limit it to only clients on their home network. And you can't actually stream without entering a confirmation code shown on the TV.
When you stream to an AirPlay device this way it sets up an adhoc device-to-device wireless connection which usually performs much better that using a wifi network/router and is why screen sharing can be so snappy. Part of the 'Apple Wireless Direct Link' proprietary secret sauce also used by AirDrop. You can sniff the awdl0 or llw0 interfaces to see the traffic. Open AirDrop and then run `ping6 ff02::1%awdl0` to see all the Apple devices your Mac is in contact with (not necessarily on your wifi network)
> and you can't really turn off wifi on a mac without turning off sip.
Just `sudo ifconfig en0 down` doesn't work? You can also do `networksetup -setairportpower en0 off`. Never had issues turning off wifi.
That's a feature that can be configured on the TV/AirPlay receiver. They've configured to allow streaming from "Anyone", which is probably the default. They could disable this is setting and limit it to only clients on their home network. And you can't actually stream without entering a confirmation code shown on the TV.
When you stream to an AirPlay device this way it sets up an adhoc device-to-device wireless connection which usually performs much better that using a wifi network/router and is why screen sharing can be so snappy. Part of the 'Apple Wireless Direct Link' proprietary secret sauce also used by AirDrop. You can sniff the awdl0 or llw0 interfaces to see the traffic. Open AirDrop and then run `ping6 ff02::1%awdl0` to see all the Apple devices your Mac is in contact with (not necessarily on your wifi network)
> and you can't really turn off wifi on a mac without turning off sip.
Just `sudo ifconfig en0 down` doesn't work? You can also do `networksetup -setairportpower en0 off`. Never had issues turning off wifi.