Covert_qos uses the Quality of service fields in IPv4 and IPv6 to set up a unidirectional covert channel. In IPv4, this is a single byte per packet; in IPv6 it is a maximum of 3 bytes per packet. Files can be sent over the channel. It uses Linux netfilter queues as a basis.
|Tags||Covert channel QoS IPv4 IPv6|
Release Notes: This release adds support for an IPv4 ECN bits only covert channel. This should make it work if firewalls or anything filter on other TOS bits. ECN usually gets through.
Release Notes: This release adds support for the IPv6 Traffic class and Flowlabels.