@misc{13397, keywords = {Internet, Standards, transport protocols, Data Communication, Evolvability, Security, Denial of Service, Flooding}, author = {Alex Zimmermann and Richard Scheffenegger and Bob Briscoe}, title = {The TCP Echo and TCP Echo Reply Options}, year = {2015}, month = {06/2015}, publisher = {Internet Engineering Task Force}, url = {http://tools.ietf.org/html/draft-zimmermann-tcpm-echo-option}, note = {(Work in Progress)}, }