@Uli

Thanks for your valuable information. Unfortunately my router does not allow URL blocking (it does not have parental controls). It also does not allow you to modify or change DNS. I would have the option of using the opendns option but it is not clear to me how to make it work on my TV. I suppose that by creating an opendns account linked to my dynamic public IP I would have to continually have the script open on my PC so that it makes the change every time the dynamic IP is modified. I know that I have to set a static IP on my Philips TV and I know how to do that, but since my IP is dynamic it will change from time to time.