@inproceedings{CAIA-CP-061204K, title = {{Covert Channels in the IP Time To Live Field}}, author = {Sebastian Zander and Grenville Armitage and Philip Branch}, month = {4-6 December}, year = {2006}, pages = {298-302}, booktitle = {Australian Telecommunication Networks and Application Conference 2006}, address = {Melbourne, Australia}, url = {http://caia.swin.edu.au/pubs/ATNAC06/Branch_3m.pdf} }