| Category | Features |
| Packet number | Total packet number, ratio of outgoing to incoming packet number, number of , , , , , , , , , | Packet direction | Direction of the first packet | Packet length | Mean, STD, max, mean (low 1/3), mean (mid 1/3), mean (high 1/3) | Packet time interval | Mean, STD, max, mean (low 1/3), mean (mid 1/3), mean (high 1/3) |
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