Cable modem, Charter communications Computer can connect and can access web pages (wired connection) Over WiFi, a RoKu device and an iPad cant connect (iPad can't open web pages). Both see the correct WiFi connection. A Samsung Tablet over WiFi can access web pages No changes were made in my equipment Any ideas what is going on? WiFi is fine since the SamSung connects. Both the Samsung and computer connect. Is it possible to block connection by some things and not others outside of my firewall (I haven't changed it, and it worked yesterday)?