Technology VPN (Virtual Private Network) allows everyone to be able to access the local network from outside by using the internet. Through the VPN, the user can access the resources within the local network, gain rights and settings are the same as physically being in a place where the local network is located. Data security and secrecy of data transmission from unauthorized access in transmission on the Internet becomes the main standard in the VPN, so that the VPN is always included will be the main feature is the encryption and tunneling.

- The development of technology that getting increasingly has an impact on a mobile device. In this era, mobile phone is a communication tool that is flexible, easy to carry anywhere, and its function is almost the same as the computer. The operating system that mobile phone has got increasingly. One of them is that Android operating system has grown rapidly and almost dominates the mobile market. The development of technology and the increase of necessities life make people have to work harder to sufficient their life. People compete to sufficient the needs and keep up the development that exists, but not everyone is able to sufficient it. It makes people want to do crimes like theft, corruption, murder, etc. This happens because someone is too obsessed with their desire. so they are afraid and anxious if they cannot sufficient and achieve their desire. Anxiety can be interpreted as an uncertain fear with a feeling of uncertainty and helplessness that can cause an uncomfortable feeling. So, it triggers their self to do bad things. In this phenomenon is needed an application that can be used to determine the level of anxiety because knowing the level of anxiety early can prevent people to do bad things. The measurement applications of anxiety levels with HARS scale are made based on the Hamilton Anxiety Rating Scale (HARS).

In the development of this modern era, there have been many technologies that are growing rapidly. As for computers, which are equipment created to facilitate human work when achieving progress both in the manufacture of hardware and software and not only computers, now developments in the field of mobile phones are included in the scope of SmartPhones, which It has been developed a lot starting from features or in the field of hardware and software, there have been many mobile-based applications that have been created and have been used by the wider community today and even become an obligation for all people to use smartphones that are equipped with various features and applications in it. starting from the field of Sales, Learning, business, Health and Education and this time the author will try to make a final project in the field of basic learning aimed at children to start an early learning stage of basic introduction and basic understanding of it's a lesson, the target we will take is learning a foreign language, namely Arabic with the system that we will make is aimed at children to make it easier for them to learn Arabic, easily, clearly and certainly fun

Dalam jaringan berbagi atau sharing adalah suatu hal yang biasa, akan tetapi jika sebalik nya maka ada suatu hal yang harus di konfigurasi ulang, seperti perubahan firewall, perubahan topologi logik dari LAN menjadi virtual local area network. Berubahnya topologi logik menjadikan perubahan pada topologi fisik dan perangkat jaringan pun seperti switch harus mengikuti dari switch unmanage ke switch manageable. Begitupula berubah interface pada routernya. Tujuan penelitian ini adalah untuk meningkatkan keamanan jaringan di PT. Navicom Indonesia menggunakan jaringan VLAN karena terdapat permasalahan dimana setiap divisi dapat saling mengakses data pada komputer yang ada, dan data tidak terpisah dari jaringan. Perancangan jaringan VLAN pada PT. Navicom Indonesia. Dalam perancangan jaringan VLAN ini menggunakan aplikasi Cisco Packet Tracer untuk simulasinya. Kemanan data pada setiap pc akan lebih aman apabila menggunakan jaringan VLAN, karena pada jaringan tersebut kita dapat membuat konfigurasi jaringan mana saja yang saling terhubung. Untuk membuat jaringan VLAN saling berkomunikasi maka diperlukan konfigurasi pada Switch untuk membuat Database VLAN, agar setiap anggota VLAN dapat saling berkomunikasi satu sama lain.