Tài liệu tham khảo WikiPedia: Payload (máy tính) http://www.pcmag.com/encyclopedia_term/0,2542,t=pa... http://www.securityfocus.com/glossary/P http://www.tcpipguide.com/free/t_DataLinkLayerLaye... http://www.techterms.com/definition/payload https://tools.ietf.org/html/rfc1122#page-18
