Hiding the Trees in the Forest: Building Network Covert Channels with Hash-Based Covert Carrier Filtering

As an effective anti-censorship mechanism, network covert channels can provide data privacy protection and ensure communication security. However, the covertness of existing network covert channels primarily depends on the secrecy of their covert algorithms. With the increasing depth of research ...

Time not getting sync on XenServer with NTP

High NTP offset and jitter while delay is low. This can be seen with "ntpq -p". Offset is the time difference between the local server and remote Jitter is the difference between the last and current offset measurements, thus if it is high, it means that the offset is increasing more over time...