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Author(s):  
Steven Noel ◽  
Vipin Swarup ◽  
Karin Johnsgard

This paper describes an approach for improving cyber resilience through the synthesis of optimal microsegmentation policy for a network. By leveraging microsegmentation security architecture, we can reason about fine-grained policy rules that enforce access for given combinations of source address, destination address, destination port, and protocol. Our approach determines microsegmentation policy rules that limit adversarial movement within a network according to assumed attack scenarios and mission availability needs. For this problem, we formulate a novel optimization objective function that balances cyberattack risks against accessibility to critical network resources. Given the application of a particular set of policy rules as a candidate optimal solution, this objective function estimates the adversary effort for carrying out a particular attack scenario, which it balances against the extent to which the solution restricts access to mission-critical services. We then apply artificial intelligence techniques (evolutionary programming) to learn microsegmentation policy rules that optimize this objective function.


2021 ◽  
Vol 2 (1) ◽  
pp. 8-18
Author(s):  
La Ode Ahmad Rasyid ◽  
Irwan Lakawa ◽  
La Ode Musa Rahmat

Indonesia is a large country that is widespread with it’s islands and isa country traversed by the Equator, so sea transportation has animportant role to play in connecting one area to another, consideringthat Indonesia has a very wide ocean. One of the means of seatransportation that is widely used by the community is the ferry. Ferryis a type of sea transportation that can be used as passenger andgoods transportation using certain routes or routes. With theexistence of the Ferry port, it can increase the acceleration ofdevelopment in the area, especially Amolengo Village, KonaweSelatan Regency.The Amolengo ferry port is a port that serves the crossing ofpassengers and goods that connects the South Konawe mainland andits surroundings with Buton Island, where the destination port is Pureport. The quality of good service provided is one of the determiningfactors for the success of the company. The research method isarranged by interviewing respondents by answering the questions onthe questionnaire. The analysis was performed using ImportancePerformance Analysis (IPA) and the Customer Satisfaction Index (CSI).The results of this study indicate that the consumer satisfaction indexon the performance of the Amolengo - Pure Ferry Port, SoutheastSulawesi Province is 84.6% and is in the range 0.81 - 1.00 indicatingthat consumers are very satisfied with the service quality of theAmolengo - Pure Ferry Port, Southeast Sulawesi Province.  


2021 ◽  
Vol 9 (2) ◽  
pp. 125-130
Author(s):  
Sandeep Kakde, Et. al.

The categorization of incoming packets can be considered as a classification based on the fields of the different headers, such as the source-Internet protocol, the target-Internet protocol, the source-port, destination-port and protocol fields. It requires that each packet is compared with rules and each packet is forwarded to the highest priority matching rule. Packet classification performance also depends on the rule sets. The required storage depends generally on the number of rules and the size of the method. In this paper, we described a Modular Field Split Bit-Vector (FSBV) algorithm, with which the Field Programmable Gate Array (FPGA) classification of packets is performed using Xilinx ISE13.1 software, with a few predefined rules. From the results obtained through EDA tools, it can be concluded that the proposed technique is memory-efficient and latency aware.


Author(s):  
Gábor Lencse

Siitperf is the World’s first free software RFC 8219 compliant SIIT (also called stateless NAT64) tester written in C++ using DPDK, which is also suitable for benchmarking IPv4 / IPv6 network interconnect devices in RFC 2544 / RFC 5180 compliant ways. Originally, siitperf followed RFC 2544 Appendix C.2.6.4 test frame format resulting in “hard coded” source and destination UDP port numbers. RFC 4814 Section 4.5 recommended random, uniformly distributed source and destination port numbers, which can make a very significant difference, when the DUT (Device Under Test) has multiple CPU cores, what is very common today. Therefore, adding this feature to siitperf is essential to be able to produce meaningful benchmarking results. In this paper, we disclose the design, implementation and performance estimation of this extension of siitperf.


2020 ◽  
Vol 1 (2) ◽  
pp. 123-141
Author(s):  
José Manuel Pérez-Canosa ◽  
Santiago Iglesias-Baniela ◽  
Alsira Salgado-Don

Heavy cargo units with a relatively reduced footprint area require a support surface large enough to transfer the forces onto the largest possible surface and/or the main stiffening (longitudinal and transverse) in order to not collapse or overstress the ship’s structure and, consequently, put the ship, the cargo, and the crew at risk. For that reason, it is necessary to project stowage and securing systems (including bedding design) to ensure that, by applying the principles of good seamanship and securing practices, the shipment is maintained in a safe condition throughout the trip until destination port arrival. Despite the increase in project cargo shipments in recent years, in many cases, International Maritime Organization (IMO) regulations are followed by default. The main purpose of this paper, thus, is to highlight certain shipments for which IMO guidelines should be taken into account in future revisions. This is done through what was considered innovative project cargo on a particular ship due to its special characteristics. To this end, because of limitations found in the IMO CSS Code regarding acceleration and force calculations, it was necessary to resort to the internationally accepted guidelines of one of the strictest classification societies.


Nanophotonics ◽  
2018 ◽  
Vol 7 (5) ◽  
pp. 853-858 ◽  
Author(s):  
Hao Jia ◽  
Ting Zhou ◽  
Xin Fu ◽  
Jianfeng Ding ◽  
Lei Zhang ◽  
...  

AbstractIn this paper, we propose and demonstrate a five-port optical router based on mode-selective property. It utilizes different combinations of four spatial modes at input and output ports as labels to distinguish its 20 routing paths. It can direct signals from the source port to the destination port intelligently without power consumption and additional switching time to realize various path steering. The proposed architecture is constructed by asymmetric directional coupler based mode-multiplexers/de-multiplexers, multimode interference based waveguide crossings and single-mode interconnect waveguides. The broad optical bandwidths of these constituents make the device suitable to combine with wavelength division multiplexing signal transmission, which can effectively increase the data throughput. Measurement results show that the insertion loss of its 20 routing paths are lower than 8.5 dB and the optical signal-to-noise ratios are larger than 16.3 dB at 1525–1565 nm. To characterize its routing functionality, a 40-Gbps data transmission with bit-error-rate (BER) measurement is implemented. The power penalties for the error-free switching (BER<10−9) are 1.0 dB and 0.8 dB at 1545 nm and 1565 nm, respectively.


2018 ◽  
Vol 31 ◽  
pp. 06004 ◽  
Author(s):  
Agus Tjahjono ◽  
Aziz Nur Bambang ◽  
Sutrisno Anggoro

The commercial vessels activity have a big role to increase the flow of number of cargoes from a port to another port. However, the impact of these activities are the disposal of ballast water from port area to the destination port. The purpose of this research was to analyze the correlation of phytoplankton, zooplankton, and heavy metal which were contained inside the ballast water of commercial vessel towards in waters of the port of Tanjung Emas Semarang. The concentration of heavy metal either from commercial vessels or the waters in port area analyzed by Atomic Absorption Spectrophotometer (AAS). The result showed that the correlation of zooplankton and phytoplankton in the water ballast at commercial vessels have a medium correlation to zooplankton and phytoplankton in waters of Port of Tanjung Emas Semarang (PTES) were 48.9% and 58.3%. Correlation of heavy metal Cd, Zn, Cu, Zn and Pb in ballast water of commercial vessel toward each metal in waters of PTES area has a strong correlation in contribution were 76.7%, 75.6%, 71.4% and 73.8%. It showed us that the loading activity of commercial vessels in port are contributed towards the pollution in waters.


2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
E. Zhang ◽  
Qihuang Mei ◽  
Ming Liu ◽  
Feifeng Zheng

This paper studies the problem of stowage planning within a vessel bay in a multiple port transportation route, aiming at minimizing the total container shifting fee. Since the access to containers is in the top-to-bottom order for each stack, reshuffle operations occur when a target container to be unloaded at its destination port is not stowed on the top of a stack at the time. Each container shift via a quay crane induces one unit of shifting fee that depends on the charge policy of the local container port. Previous studies assume that each container shift consumes a uniform cost in all ports and thus focus on minimizing the total number of shifts or the turnaround time of the vessel. Motivated by the observation that different ports are of nonuniform fee for each container shift, we propose a mixed integer programming (MIP) model for the problem to produce an optimal stowage planning with minimum total shifting fee in this work. Moreover, as the considered problem is NP-hard due to the NP-hardness of its counterpart with uniform unit shifting fee, we propose an improved genetic algorithm to solve the problem. The efficiency of the proposed algorithm is demonstrated via numerical experiments.


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