Flow-based intrusion detection has recently become a promising security mechanism in high speed networks (1-10 Gbps). Despite the richness in contributions in this field, benchmarking of flow-based IDS is still an open issue. In this paper, we propose the first publicly available, labeled data set for flowbased intrusion detection. The data set aims to be realistic, i.e., representative of real traffic and complete from a labeling perspective. Our goal is to provide such enriched data set for tuning, training and evaluating ID systems. Our setup is based on a honeypot running widely deployed services and directly connected to the Internet, ensuring attack-exposure. The final data set consists of 14.2M flows and more than 98% of them has been labeled.

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Abstract:A 4-element LO-phase shifting phased-array system with 8-phase passive mixers terminated by baseband capacitors is realized in 65nm CMOS. The passive mixers upconvert both the spatial and frequency domain filtering to RF, realizing blocker suppression directly at the antenna input. 3rd harmonic reception is used to widen the frequency range to 0.6-3.6GHz at 68-195mW power dissipation. Up to +10dBm of P 1dB for out-of-beam/band, a 1-element NF of 3-6dB and in-beam/band IIP3=+2..+9dBm are measured. 2 TextMulti-antenna transceivers with beam-forming are recently gaining interest also for low GHz frequencies (<6GHz) [1]-[4]. In the antenna beam, (phase shifted) signals from multiple antennas add constructively, improving SNR, while out-of-beam signals add destructively (i.e. spatial filtering).Usually the summation point is behind some gain blocks, which then need to be capable of handling strong signals. To improve the input-referred compression point P 1dB , a fully passive switchedcapacitor approach was presented in [4], providing P 1dB =+2dBm, but at a high noise penalty:NF=18dB. Here we propose to sum immediately at the baseband capacitors of passive mixer-first switched-RC down-converters. We will show that this can render a direction dependent RF impedance (spatial filtering) together with RF band-pass frequency filtering at lower noise and higherThe proposed architecture is shown in Analog G m blocks consume 36mW generating 100mS at I and Q paths. Overall power when 4 elements are activated is 68-195mW for the received frequency range of 0.6-3.6GHz. The maximum ripple in the gain is 2.5dB and in-beam/band IIP3 varies from +2.. +9dBm (see Fig. 5.2.5). The first harmonic is rejected between 15-25dB. The measurement results are compared to three previously reported 4-element phased-array systems. Clearly remarkable P 1dB and NF are achieved, and the dynamic range at the antenna inputs is substantially improved compared to previous work.Acknowledgment:

Phased arrays in CMOS for consumer communication bands aim to enhance receiver performance by exploiting beamforming with antenna arrays. Sensitivity increases with the number of antenna elements through array gain and interferers can be cancelled through the spatial filtering of the beam pattern [1]. For the latter, the linearity of the receiver before the beamforming summing point becomes a bottleneck as interferers are not cancelled yet. Phase shifting in the LO domain reduces the complexity in the signal path and enables the use of linear signal blocks, but has high requirements on the multi-phase LO generation [2]. On the other hand, a switched-capacitor phase shifter can be very linear, but is limited by the linearity of the necessary input matching and element summing gm-stages [3]. This paper proposes a fully passive phased array receiver front-end which implements impedance matching, phase shifting and element summing with only switched-capacitor stages for a high linearity.The principle of a vector modulator phase shifter is illustrated in Fig. 1. (top left). A phase shift φ between 0° and 90° can be accomplished by adding two orthogonal signal phases weighted by respectively the sine and cosine of φ. For a full 360° phase shift range, four signal phases are required. These phases can be accurately generated for a wide RF frequency band by performing downconversion with the 25% duty cycle clocked passive quadrature mixer in Fig. 1. (top right).

-To reject strong interference in excess of 0 dBm, a 4-element LO-phase shifting phased-array receiver with 8-phase passive mixers terminated by baseband capacitors is presented. The passive mixers up-convert both the spatial and frequency domain filtering from baseband to RF, hence realizing blocker suppression directly at the antenna inputs. A comprehensive mathematical model provides a set of closed-form equations describing the spatial and frequency domain filtering including imperfections. A prototype is realized in 28 nm CMOS. It exploits 3 rd harmonic reception to achieve a wide RF-frequency range from 0.6-4.5 GHz at 34-119 mW power dissipation, while also providing impedance matching. Out of the band/beam, a 1 dB-compression point as high as +12/+10 dBm has been measured. The 1-element NF over the RF-frequency range is 4-6.3 dB, while in-beam/band IIP3 values of 0..+2.6 dBm are measured. This proposed technique can be instrumental to make RF receivers more robust for interference, while still being flexibly tunable in frequency.