Developer walk-through for the "rt_check-internet-access-tcp" LabVIEW project available for download at https://learn-cf.ni.com/teach/riodevg... that covers this topic: "Determine whether or not Internet access is available by attempting a TCP connection to the "Microsoft Network Connectivity Status Indicator" (NCSI) web service." See the "RIO Developer Essentials Guide for Academia" available at https://learn-cf.ni.com/teach/riodevg... for more video tutorials related to programming, architecting, and networking with LabVIEW and NI Academic RIO products.