Analisis dan Implementasi Wireless Honeypot Pada Jaringan Telkom PDC

ABSTRAKSI: Perkembangan teknologi yang pesat di bidang komunikasi data telah membuat banyak kemudahan di masa sekarang ini. Hal ini diiringi pula dengan meningkatnya kebutuhan akan kehandalan, kecepatan dan efektivitas pertukaran data antar belahan dunia. Setelah beberapa tahun terkonstruksi dan teranyam dengan baik di banyak negara, jaringan komputer yang masih kebanyakan berbasis kabel dihadang oleh tuntutan user yang mulai cenderung menyukai layanan mobile. Peningkatan dan kemajuan yang pesat ini sayangnya kurang ditunjang dengan perkembangan sistem pertahanan terhadap serangan yang baik pula. Lebih lagi, sistem kemanan teknologi wireless yang ada saat ini membuat user masih khawatir dan menjadi relatif kurang nyaman dalam menggunakan teknologi wireless.Beberapa kelemahan IDS ( Intrusion Detection System ) antara lain kesulitan membedakan aktivitas legal dengan trafik malicious, serta belum dapat mendeteksi serangan jika data yang dikirim berupa data terenkripsi. Merangkak naiknya angka kejahatan di Internet diharapkan mampu diminimalisasi dengan hadirnya honeypot. Sederhananya, honeypot merupakan suatu sistem yang memang didesain untuk disusupi penyerang, baik itu oleh hacker, cracker, ataupun script kiddy. Karena honeypot yang sejatinya merupakan suatu sistem tiruan, maka setiap interaksi dengan honeypot, semacam probe, scan dan yang lainnya akan dianggap sebagai usaha penyusupan.Pada tugas akhir ini, akan di implementasikan suatu sistem wireless honeypot yang menyerupai production system yang sesungguhnya pada jaringan Telkom PDC, lalu diujicobakan beberapa tipe serangan pada sistem yang telah dirancang hingga dapat menganalisis kehandalan wireless honeypot berdasarkan data yang didapat dari log, untuk dianalisis secara berkelanjutan untuk meningkatkan sistem keamanan jaringan.Kata Kunci : Wireless, Honeypot, LogABSTRACT: The rapid growth of technology in communication data has made many advantages nowadays. This is also conducted by the raising need of the reliability, speed and effectivity of the data exchanging itself. For years the network has been well established in several countries,the computer network which is commonly still in wired based is abushed by the users who tend to adopt mobile services. Unfortunately, this rapid growth is less supported by the improvement of security system as well. Moreover, the wireless network security system often makes the users feel worries and probably they become uncomfortable in enjoying the wireless technology.Some weakness of IDS ( Intrusion Detection System ) are it is hard to determine which one is legal activity with malicious traffic and it could not detect the attack if the data being sent is encrypted data. The increasing number of cyber crime hopefully can be minimized by honeypot. Simply, honeypot is indeed a sytem designed to be probed, compromised by intruder ( hacker, cracker, or script kiddies ). Since honeypot is a fake system, hence every single interaction occured with honeypot, such as probing, scanning,etc. will be determined as an infiltration.In this document, there will be implemented wireless honeypot which immitates the real production system in Telkom PDC network, and continously will be tested some attack pattern to the system. Then, the reliability of wireless honeypot can be analyzed by the captured data from log which will be simultaneously analyzed to improve the network security system.Keyword: Wireless, honeypot, lo

Beyond R0 : demographic models for variability of lifetime reproductive output

© The Author(s), 2011. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in PLoS One 6 (2011): e20809, doi:10.1371/journal.pone.0020809.The net reproductive rate measures the expected lifetime reproductive output of an individual, and plays an important role in demography, ecology, evolution, and epidemiology. Well-established methods exist to calculate it from age- or stage-classified demographic data. As an expectation, provides no information on variability; empirical measurements of lifetime reproduction universally show high levels of variability, and often positive skewness among individuals. This is often interpreted as evidence of heterogeneity, and thus of an opportunity for natural selection. However, variability provides evidence of heterogeneity only if it exceeds the level of variability to be expected in a cohort of identical individuals all experiencing the same vital rates. Such comparisons require a way to calculate the statistics of lifetime reproduction from demographic data. Here, a new approach is presented, using the theory of Markov chains with rewards, obtaining all the moments of the distribution of lifetime reproduction. The approach applies to age- or stage-classified models, to constant, periodic, or stochastic environments, and to any kind of reproductive schedule. As examples, I analyze data from six empirical studies, of a variety of animal and plant taxa (nematodes, polychaetes, humans, and several species of perennial plants).Supported by National Science Foundation Grant DEB-0816514 and by a Research Award from the Alexander von Humboldt Foundation

Physicochemical characteristics of castor oil from local wild castor plant in Ghana

Physicochemical characteristics of castor oil from seeds of the local wild castor plant (Ricinus communis) found in Ghana were determined to evaluate its suitability for exploitation for industrial purposes. The castor seeds were found to be rich in oil, containing 57 per cent castor oil of which 37 per cent was easily expressed by cold pressing. The physicochemical characteristics of the pressed oil were found to be comparable to those reported by others. The characteristics included iodine value, 82; saponification value, 177; acid value, 2.7; and hydroxyl value, 180. The rich oil content and its high quality suggest that the oil is suitable for commercial exploitation as an industrial raw material in various preparations such as in cosmetics and in paints. Ghana Journal of Science Vol. 45, 2005: 41-4

Stability of Flavin Semiquinones in the Gas Phase: The Electron Affinity, Proton Affinity, and Hydrogen Atom Affinity of Lumiflavin

Examination of electron transfer and proton transfer reactions of lumiflavin and proton transfer reactions of the lumiflavin radical anion by Fourier transform ion cyclotron resonance mass spectrometry is described. From the equilibrium constant determined for electron transfer between 1,4-naphthoquinone and lumiflavin the electron affinity of lumiflavin is deduced to be 1.86 ± 0.1 eV. Measurements of the rate constants and efficiencies for proton transfer reactions indicate that the proton affinity of the lumiflavin radical anion is between that of difluoroacetate (331.0 kcal/mol) and <i>p</i>-formyl-phenoxide (333.0 kcal/mol). Combining the electron affinity of lumiflavin with the proton affinity of the lumiflavin radical anion gives a lumiflavin hydrogen atom affinity of 59.7 ± 2.2 kcal/mol. The Δ<i>G</i>₂₉₈ deduced from these results for adding an H atom to gas phase lumiflavin, 52.1 ± 2.2 kcal/mol, is in good agreement with Δ<i>G</i>₂₉₈ for adding an H atom to aqueous lumiflavin from electrochemical measurements in the literature, 51.0 kcal/mol, and that from M06-L density functional calculations in the literature, 51.2 kcal/mol, suggesting little, if any, solvent effect on the H atom addition. The proton affinity of lumiflavin deduced from the equilibrium constant for the proton transfer reaction between lumiflavin and 2-picoline is 227.3 ± 2.0 kcal mol^–1. Density functional theory calculations on isomers of protonated lumiflavin provide a basis for assigning the most probable site of protonation as position 1 on the isoalloxazine ring and for estimating the ionization potentials of lumiflavin neutral radicals