This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
TCP ThreeWay Handshake.svg ValidSVG TCP ThreeWay Handshake with timing information Font is ubuntu Ubuntu Mono TCP DreiWegeHandschlags mit Laufzeitinformationen Font ist ubuntu Ubuntu Mono own Tango Desktop Project Network Server Tango Desktop Project Computer Fleshgrinder and freedesktop org The People from The Tango Desktop