You can block porn and other websites by using a free Internet filter by OpenDNS. To block pornography, sexuality or tasteless websites you need to change some modem/router settings. To do that open your Internet Browser such as Google Chrome, Safari or Internet Explorer and go to the address 192.168.0.1 or if that doesn't work, try 192.168.1.1, the default username/password for TPLink is admin/admin, Netgear is admin/password, DLink is admin/"blank" once you are in, look for Internet Settings. Once you find the Internet settings, all you need to do is change the two DNS addresses to 220.127.116.11 and 18.104.22.168. If you want to customise the filter to block other sites such as social media etc you will need to setup a free account at OpenDNS.