VPN Tunnel Research Articles

Quantum-Secured Data Transmission in Urban Fiber-Optics Communication Lines

Quantum key distribution (QKD) provides theoretic information security in communications based on the laws of quantum physics. In this work, we report an implementation of quantum-secured data transmission in the infrastructure of Sberbank of Russia in standard communication lines in Moscow. The experiment is realized on the basis of already deployed urban fiber-optics communication channels with significant losses. We realize the decoy-state BB84 QKD protocol using the one-way scheme with polarization encoding for generating keys. Quantum-generated keys are then used for continuous key renewal in the hardware devices for establishing a quantum-secured VPN Tunnel between two offices of Sberbank. The hybrid approach used offers possibilities for long-term protection of the transmitted data; it is promising for integrating into the already existing information security infrastructure.

A research on the impact of encryption algorithms on the quality of VPN tunnels’ transmission

The following article presents the results on the impact of encryption algorithms and the cryptographic hash function on the QoS (Quality of Service) transmission in a computer network. A network model supporting data encryption using the AES algorithm and the MD5 and SHA hash functions used in VPN tunnels was designed and tested. The influence of different data length on the quality of transmission in a secured network was studied. The measurements and tests of networks were performed according to two methodologies ITU-T Y.1564 and RFC 2544. The impact of the data encryption mechanism on bandwidth, data loss and maximum delays was examined. The secured network tests were performed with different combinations of encryption algorithms and hash functions of the VPN tunnel in the ESP (Encapsulating Security Payload) transport mode.

Model of the Different Heterogeneous Networked Database Systems at the Medium and Large Companies in Kosovo

Modern companies use Local and Regional Networks, as well as the Internet, for everyday Business. With the latest developments in the region, this has become relatively easy, since companies have a full support to develop the IS by the ISP in a manner of: Centralized (Hierarchical) IS; Decentralized (Distributed) IS or Combined (both hierarchical and distributed) IS. Since the company branches and hence its resources lay within one single state, the network is usually provided by the same ISP. This means that the offer includes Internet, DNS, E-mail service, Intranet and VPN. Now, most of the services provided are designed to be used all over the WWW and the offer itself consists of very ingenious solutions. The development of applications for Internet / Intranet seeks to overcome the limitations of Web forms interface. The nature of work of Companies distributed around a state requires a combination of various types of communication means as: Wired Networks; Wireless Networks; Meshing Networks; GPRS Networks. In the case of bigger trading Companies, the number of processes that has to be managed, as well as very large number of various items-codes, in combination with the need to serve immediately, makes VPN Networks more attractive. VPN makes possible the use of: Local Data Servers; Local Application Servers; Distant Central Data Servers; Combination of Wire Networks with Wireless and GPRS Networks. The expansion of the business in other neighboring countries complicates the communication between branches and central. The need for immediate information stays the same, but, since we usually have more than one different ISP, the solutions becomes a little more complicated. This paper offers the original solution how the communication between branches has to be done using Bridges and VPN tunnels between the networks of two different ISP-s. DOI: 10.5901/ajis.2015.v4n2p519

다중큐잉 실시간 트래픽쉐이핑을 적용한 네트워크간 VPN 지원 유무선공유기 시스템

In order to build network infrastructure to implement the aforementioned advantages enabling smart device users to work anywhere, professional support and expensive VPN devices are required. This is a barrier to supplying VPN devices to small and medium-sized institutes. To address this issue, this study aims to implement OpenVPN, OpenSSH and iproute based on the OpenWRT platform which is an embedded OS for open networks in affordable open wired/wireless gateway H/W platforms to support the inter-network VPN. In addition, the network environment can be maintained optimal by applying a multi-queuing real-time traffic shaping technology to VPN tunnels, although channel quality changes.

Application Research of Computer Network Load Certification Constructing VPN Tunnel Technology

Setting-up large-scale VPN network becomes an important task, VPN has been attracted extensibe attention of business subscribers. In one speak, VPN technology is very complicated, it involves in communication technology, cryptography, authentication technology, it is an interdisciplinary. Tunnel technology is a key technology to set-up VPN network. In the port of host LAN and Internet, the data is packed in a pattern that can transport in Internet , in object LAN, the data is decompression and can use it . Give a simple analysis of the tunnel technique from the development of tunnel technique, to know the security technical of the setting-up large-scale VPN.

The Application of Telephone Mobility Gateway Based on VPN Tunnel

The Application of Telephone Mobility Gateway Based on VPN Tunnel

VPN Packet Loss-Oriented Dynamic Control

Through security protocols and virtual private network tunneling for data confidentiality, message integrity, and endpoint authentication. Users can access anywhere Internet VPN service within the group. VPN tunneling technology VPN gateway group is exposed to internal services in the Internet, malicious users are using client terminal allows officers to attack the internal services group. So we must study to the control is based on the model, combined with VPN network traffic characteristics, the topological feature model of security and safety technology and related technologies. Study on dynamic access control packet loss model in this article, you can study can greatly increase VPN security, confidentiality of data on. Due to the introduction of the concept of dynamic control, we can more accurately control the packet loss and improve system performance.

Based on VPN Tunnel Technology of Wireless Local Area Network

This paper analyzes the wireless local area network existing safety and efficiency problem. It put forward the VPN tunnel technology to solve these problems. Theory explains that it is very the advantages of layer second tunneling protocol in a wireless local area network. This technology is proved to be reliable by Network Simulate 2 tool. It is proved that the technique is the advantage of high efficiency and safety.

Intrusion Prevention System in VPN with Entities Based Access Rule and Vibrant Key Authentication.

VPN technology continues to struggle with intruders attacks that cripple their network performance and connectivity. This compels security threats on the remote network because its firewall does not know what transfer is flowing within VPN tunnel. This paper proposes a new framework called V-Safe which provides vibrant key authentication and entities based access rule to prevent intruders. The traditional access rule models are group based and it is not an effective mechanism since it uses common identity for access control. The entities based access rule provides access permission based on various entities like requestors, resources, actions and environment that will prevent against intruders and performs deep scans to detect and block most suspicious threats and attacks. The V-Safe framework is evaluated through simulation and it shows the proposed system is more secure and efficient than the existing intrusion prevention system.

Third party EPID with IGRT capability retrofitted onto an existing medical linear accelerator.

Radiation therapy requires precision to avoid unintended irradiation of normal organs. Electronic Portal Imaging Devices (EPIDs), can help with precise patient positioning for accurate treatment. EPIDs are now bundled with new linear accelerators, or they can be purchased from the Linac manufacturer for retrofit. Retrofitting a third party EPID to a linear accelerator can pose challenges. The authors describe a relatively inexpensive third party CCD camera-based EPID manufactured by TheraView (Cablon Medical B.V.), installed onto a Siemens Primus linear accelerator, and integrated with a Lantis record and verify system, an Oldelft simulator with Digital Therapy Imaging (DTI) unit, and a Philips ADAC Pinnacle treatment planning system (TPS). This system integrates well with existing equipment and its software can process DICOM images from other sources. The system provides a complete imaging system that eliminates the need for separate software for portal image viewing, interpretation, analysis, archiving, image guided radiation therapy and other image management applications. It can also be accessed remotely via safe VPN tunnels. TheraView EPID retrofit therefore presents an example of a less expensive alternative to linear accelerator manufacturers’ proprietary EPIDs suitable for implementation in third world countries radiation therapy departments which are often faced with limited financial resources.

Creation of VPN tunnels simplified

Creation of VPN tunnels simplified