A Traffic Padding to Limit Packet Size Covert Channels

Abstract

Nowadays applications for big data are widely spread since IP networks connect milliards of different devices. On the other hand, there are numerous accidents of information leakage using IP covert channels worldwide. Covert channels based on packet size modification are resistant to traffic encryption, but there are some data transfer schemes that are difficult to detect. Investigation of the technique to limit the capacity of covert channels becomes topical as covert channels construction can violate big data security. The purpose of this work is to examine the capacity of a binary packet size covert channel when a traffic padding is generated.