The UK's largest broadband providers will be required to enable automatic network-level filtering of adult websites from next year.
Prime Minister David Cameron has announced a series of measures geared at protecting minors using the internet, including blocks on pornography websites.
As part of the new measures - detailed in a Code of Conduct - the likes of BT, Sky, Virgin Media and TalkTalk will be required to automatically block adult-themed websites by the end of 2014, reports ISPreview.co.uk.
Web users will be able to opt out of network filtering should they so choose, but this must be an active choice.
Mr Cameron explained that when new broadband accounts are set up, family-friendly filters will be automatically selected.
"If you just click 'next' or 'enter', then the filters are automatically on and they will cover any device connected to your home internet account," he stated.
The PM said there would be "no more hassle" downloading filters for every device, with just one-click protection for broadband users.
He explained that the filter settings may only be changed by the named account holder, who has to be an adult.