UIN (Universitas Islam Negeri) Sunan Kalijaga, Yogyakarta: E-Journal Fakultas Sains dan Teknologi
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ANALISA DAN SIMULASI KEAMANAN JARINGAN UBUNTU SERVER DENGAN PORT KNOCKING, HONEYPOT, IPTABLES, ICMP
No full textKeamanan jaringan komputer sangatlah penting untuk menjaga kerahasiaan data dan informasi yang terdapat pada server. Data dan informasi ini hanya ditujukan untuk administrator dan user yang berhak mengakses saja melalui port layanan. Membiarkan port penting terbuka adalah kesalahan fatal yang dapat mengakibatkan serangan terhadap server, umumnya teknik yang sering dilakukan adalah scan port dan bruteforce. Hal lain untuk melindungi server dengan firewall adalah salah satu metode yang dapat diterapkan pula, namun penggunaan firewall tidak efektif dikarenakan akan memblok semua layanan tanpa memperdulikan siapapun termasuk administrator. Untuk tujuan tersebut maka penelitian ini dilakukan, dengan menggunakan metode port knocking yang di kembangkan dengan metode lainnya yaitu mengkombinasikan dengan Honeypot, IPtables dan ICMP. IPtables sendiri menggantikan peran dari firewall, untuk menentukan aturan port mana yang akan di filter, sehingga setiap paket yang masuk pada filtered port akan di-refused. Port knocking berfungsi untuk menentukan ketukan rahasia terhadap port layanan server. Honeypot untuk mengalihkan server port pada port tiruan dan sengaja terbuka agar kita tahu apa saja upaya yang dilakukan untuk memasuki server, dan ICMP berfungsi sebagai ping request dari client terhadap server
PENGARUH PENAMBAHAN HNO3 TERHADAP FOTODEGRADASI ZAT WARNA CONGO RED MENGGUNAKAN FOTOKATALIS TiO2
No full textAbstrak. Telah dilakukan penelitian tentang Pengaruh Penambahan HNO3 terhadap Fotodegradasi Zat Warna Congo Red Menggunakan Fotokatalis TiO2. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan HNO3 pada variasi waktu penyinaran, massa TiO2 dan pH terhadap efektivitas fotodegradasi Congo Red terkatalis TiO2. Variasi waktu penyinaran dilakukan selama 10, 15, 30, 45 dan 60 menit. Variasi massa katalis TiO2 dilakukan sebanyak 15, 20, 25, 30 dan 35 mg, variasi pH larutan Congo Red dilakukan pada pH 2, 3, 5, 7 dan 9, dan penambahan volume HNO3 0,005 M dilakukan pada volume 2,5; 5; 7,5; 10; 12,5 dan 10,5 mL. Pengaruh parameter tersebut dipelajari menggunakan reaktor UV black light 220 V. Hasil penelitian menunjukkan bahwa HNO3 yang ditambahkan terhadap fotodegradasi Congo Red berpengaruh terhadap peningkatan efektivitas degradasi. Efektifitas fotodegradasi Congo Red pada variasi waktu penyinaran mampu mendegradasi sebesar 85,877% dari 23.202% selama 45 menit, dengan massa TiO2 sebesar 25 mg. Pada variasi pH larutan zat warna Congo Red didapatkan efektivitas fotodegradasi tertinggi pada pH 3 dengan persentase degradasi sebesar 85,658% dari 71,754%. Adapun pada variasi penambahan volume HNO3 efektivitas fotodegradasi tertinggi dicapai pada volume 5 mL dengan persentase degradasi sebesar 89,449%
PENGARUH WAKTU FERMENTASI DAN PENAMBAHAN KONSENTRASI INOKULUM (Acetobacter aceti) TERHADAP KUALITAS ASAM CUKA DARI BUAH KERSEN (Muntingia calabura L)
No full textAbstrak. Asam cuka merupakan bahan tambahan pangan yang digunakan sebagai penyedap. Asam cuka dibuat melalui 2 tahap fermentasi yaitu proses fermentasi larutan yang mengandung gula menjadi etanol, dilanjutkan dengan proses oksidasi etanol menjadi asam asetat. Kersen mengandung karbohidrat digunakan sebagai bahan dasar pembuatan asam cuka. Penelitian bertujuan untuk mengetahui pengaruh waktu fementasi dan penambahan konsentrasi inokulum Acetobacter aceti terhadap kadar asam cuka, kadar alkohol, kadar gula dan pH asam cuka dari buah kersen. Penelitian juga bertujuan untuk mengetahui perlakuan waktu fementasi dan penambahan konsentrasi inokulum Acetobacter aceti menghasilkan rendemen asam cuka terbanyak dan memenuhi SNI 01-3711-1995. Penelitian menggunakan pola Rancangan Acak Lengkap (RAL) dengan 2 faktorial yaitu waktu fermentasi 7,10, 13 hari dan penambahan konsentrasi Acetobacteri aceti 5%, 10%, 15%. Produk asam cuka dianalisis kadar asam cuka menggunakan metode titrasi asam basa. Kadar alkohol dan kadar gula diukur menggunakan metode spektrofotometri UV-Vis. Sedangkan nilai pH diketahui dengan menggunakan indikator pH universal. Hasil penelitian menunjukan bahwa Perlakuan waktu fermentasi dan penambahan konsentrasi inokulum Acetobacter aceti dalam pembuatan asam cuka buah kersen berpengaruh terhadap kadar asam cuka, kadar alkohol dan kadar gula. Kondisi optimum yang menghasilkan rendemen asam cuka terbaik pada perlakuan waktu fermentasi 10 hari dan penambahan inokulum Acetobacter aceti sebanyak 15%. Kadar asam cuka yang dihasilkan sebesar 8,56 mg/100mL. Kadar asam cuka, kadar alkohol dan kadar gula asam cuka dari buah kersen yang dihasilkan pada perlakuan waktu fermentasi 13 hari dan penambahan konsentrasi inokulum 5%; waktu fermentasi 13 hari dan penambahan konsentrasi inokulum 10%; waktu fermentasi 13 hari dan penambahan konsentrasi inokulum 15% sesuai dengan SNI 01- 3711- 199
Business Process Model Variations in Islamic Boarding Schools Using Requirements Analysis Method
No full textThe business process at a boarding school is a collection of all the detailed activities that have been arranged in such a way as to solve the existing problems so that the objectives set can be met. There are development standards that can be used as a reference to build architecture and business process models at a boarding school. Every business process has planned many ways to be able to obtain goals precisely. Therefore variations are formed in the business process models. Business process models of variations are a collection of business process models that have the same goals in different ways. Variations in the business process models are needed to achieve the right goals in a variety of ways according to existing resources and needs. From all reviews of the variations, it is necessary to have a cyclomatic complexity to find out how complex the business process models is and to maintain the simplicity of the business process models. This study uses the requirements analysis method, which is the intensive interaction stage between the system analyst and the system user community (end-user), where the system development team shows its expertise to get user feedback and confidence so that it gets good participation. The results of this study are a collection of variations of business process models that have a level of complexity not much different from one variation, with another on each standard applied
Analysis of Least Significant Bit Method Using Sequential Encoding-Decoding in Steganography Digital Image
No full textThe method of steganography commonly used to hide data or information is Least Significant Bit (LSB) method. One of the relevant research is LSB using sequential Encoding - Decoding by David Pipkorn and Preston Weisbrot. In this research, an analysis of the LSB method using Sequential Encoding - Decoding by doing some testing. The tests are on the aspect of message security using tools StegSpy and enhanced LSB algorithm, testing on image quality by calculating the Peak Signal to Noise Ratio (PSNR) value and see the image histogram, testing on robustness of message by doing some image processing operations on stego image, like cropping, rotating, and etc, and then testing on capacity to check size of cover image and stego image and calculates the maximum size of data that can be hidden. From the testing process, we know that there are deficiencies in the aspects of security, robustness and capacity of a message. And then in this research we try to change the location of messages that are hidden in the image bits, which previous research used the 8th bit of each bytes, changed to the 7th bit. To be able to correct deficiencies in the security aspect. After repairing and testing like before, obtained better results in the security aspect. This can be seen from the image of the enhanced LSB algorithm process, the message is not detected, but unfortunately the image quality is reduced, with the low PSNR value generated
Implementation of Model-View-ViewModel (MVVM) Architecture Pattern in the Sistem Informasi Akademik UNIDA Gontor Mobile Application
No full textSoftware architecture primarily tuned for moderating the rising software complexities and changes. Model-View-ViewModel (MVVM) is a software architectural pattern that facilitates a separation of development of the graphical user interface from the development of the back-end logic (the data model). University of Darussalam Gontor (UNIDA Gontor) is having an Academic System called Sistem Informasi Akademik (SIAKAD) which supports the management of its college’s data administration. Currently, the SIAKAD UNIDA Gontor’s performance is still far from optimal, mainly because some of its features aren’t user-friendly yet, especially when the SIAKAD UNIDA Gontor accessed from the mobile devices. Therefore, this research aims to implement the MVVM architecture pattern in the SIAKAD UNIDA Gontor mobile application, to increase its user-friendly aspect, especially for Android device users. This research is carried out with Waterfall development method, using Kotlin programming language and utilising Android Jetpack. Results from the app testing with Black Box method show that the application is running well and have no error. Next, results from the questionnaire distributed to the users (students, lecturers and BAAK staffs) show that the application run well and satisfying. From those trial results, show that the implementation of MVVM on SIAKAD UNIDA Gontor Android application has been successful according to the scenario and ready to be applied in the even semester of 2019/2020 campus’ academic year and so on (https://play.google.com/store/apps/details?id=com.amoled.sidago). Further research and development, can be directed to the addition of new features and can support another mobile operating system, such as iOS, Tizen, Harmony OS, etc
Forecasting and Effectiveness Analysis of Domestic Airplane Passengers in Yogyakarta Adisutjipto Airport with Autoregressive Integrated Moving Average with Exogeneous (ARIMAX) Model
No full textAirplane is one of the public transportations options that many people choose when traveling long distance. Nowadays, it is notes that the number of passengers domestic flight has increased from the previous months. This increase, especially occurs on the holidays, such as year-end holidays, Eid, and others. The increase of airplane passengers is inversely proportional to the number of available airplane. Forecasting the number of airplane passangers is necessary to prepare additional facilities when there is increasing passengers. This research focused on forecasting domestic airplane passengers at Adisucipto Airport, Yogyakarta using ARIMAX method to forecast the number of domestic airplane passengers and the effectiveness of domestic passengers at the international airport. The purpose of this research is to determine the best ARIMAX model and forecast airplane passengers in Adisucipto airport. The results will show the effectiveness of ARIMAX model with the effect of calendar variance on domestic airplane passenger forecasting at international airport. Based on the result of AIC and RMSE values, it shows that the ARIMAX(1,0,1) model with calendar variation is better than ARIMA(1,0,1) in predicting the number of airplane passengers at Yogyakarta Adisutjipto airport
Information System Development for The Service Improvement and Its Effectiveness at PUSBIS UINSA
No full textMany companies or agencies are aware of the role of information technology as a supporter to achieve their vision, mission, and goals nowadays. In 2013, IAIN Sunan Ampel Surabaya changed its name to UINSA and its financial management system is regulated in BLU. This indicates that UINSA must become a self-supporting college financially and increase its income. Reviewing these phenomena, this research would like to develop an information system/application management information system for the PUSBIS of UINSA which focusing on PUSBIS center, Greensa.in, and public facility. The purpose of this study is to know how to develop the information system and its effectiveness in improving service usage of assets / public facilities in UINSA. For that, this research uses the R&D method. The R & D used in this research is R & D level 4 due to this paper will research and develop new products. The results of this study are the settled information system and its statements that information systems that have been built to improve services in lending/usage of assets in PUSBIS
Development of Teaching Material of Sony Vegas Media Based with Anchored Instruction Models for Tennis Course in IKIP Budi Utomo Malang
No full textThe purpose of this study is to develop teaching materials of Sony Vegas media based with anchored instruction models. The development of this teaching material used the Research and Development (R&D) method with the 4D model (Define, Design, Develop, and Dessiminate). This research was started from the define stage where at this stage identification of material concepts were carried out in the textbook. Furthermore, the design and manufacture of Sony Vegas media based teaching materials with anchored instruction models was carried out in the design phase. After the teaching materials have been designed and made, the development stage was carried out, namely product validation by experts and product trials in the lecture process. Based on the results of this develop phase, it can be stated that the product was valid and practical, so it can be continued to the dessiminate stage. Based on the results of the validation of media experts, material experts, and small group trials. As a whole the development of teaching material with Soni Vegas-based is appropriate to be used as teaching material with an average value of 96.17% and it includes in the criteria of "Very Valid”
JOINTING MACHINE MAINTENANCE ANALYSIS USING RELIABILITY CENTERED MAINTENANCE (RCM) METHOD
No full textMaintenance activities must be carried out appropriately based on the type of machine and machine components. A machine consists of vital components, so that if the components of a machine are continuously subject to fatal damage, it can result in losses for the company. Proper maintenance activities can extend the service life of the machine and can minimize costs for maintenance of damaged machines. PT. Bakrie Pipe Industries is a company that produces steel pipes of various diameters. In producing steel pipes, PT. Bakrie Pipe Industries uses several machines. In 2019, there were several machines with the most frequent problems at Plant KT 24. The machine with the highest downtime of 2660 minutes was the Jointing Machine. In this study, a maintenance analysis was carried out using the Reliability Centered Maintenance (RCM) method on the Jointing Machine at Plant KT 24 PT. Bakrie Pipe Industries. In the results of selecting the maintenance task for the Jointing Machine critical components, it can be concluded that the Roller Blade component with the Potential Cause of Failure is broken Guide Wheel Bearing, the maintenance task is selected, namely Condition-Directed Task, Indexing Clamp component is Condition-Directed Task, Torch component is Condition-Directed Task, Nozzle component is Condition-Directed Task, Roller Blade component with the Potential Cause of Failure is Leaky Cylinder is Failure Finding Task, Bushing Torch component is Condition-Directed Task, and Cooler Torch Hose component is Failure Finding Task