The acronym VPN stands for "Virtual Private Network". VPN is therefore a logical private network on a publicly accessible infrastructure. Only the communication partners belonging to this private network can communicate with each other and exchange information and data.
However, there is no general definition for VPN. The term and the abbreviation VPN stand for a variety of different techniques. For example, some technology, protocol or product is assigned to VPN, although aspects such as encryption or authentication are completely left out.
VPNs must ensure authenticity, confidentiality and integrity so that they can be operated safely with data protection. Authenticity means identifying authorized users and verifying that the data comes only from the authorized source. Confidentiality and confidentiality is created by encrypting the data. Integrity ensures that the data has not been changed by third parties. Regardless of the infrastructure, VPNs ensure the security of the data that is transmitted over it.
End-to-site VPN describes a VPN scenario in which home workplaces or mobile users are integrated into a company network. The external employee should work as if he is in the company's network. This VPN scenario is also known as remote access. VPN technology creates a logical connection, the VPN tunnel, to the remote local network via a public network. A VPN client must be installed on the computer of the external employee.
The focus is on the lowest possible technical and financial expenditure for secure access to the remote network.
Site-to-Site VPN and LAN-to-LAN VPN are VPN scenarios for interconnecting several local networks from branch offices or branches to form a virtual network via a public network. Networks located in different locations can be connected directly via a leased dedicated line. This dedicated line usually corresponds to a physical leased line between the two locations. Since every network usually also has a connection to the Internet, it makes sense to use this Internet connection to interconnect two or more networks with VPN technology (LAN-to-LAN coupling).
A variant of Site-to-Site-VPN is the Extranet-VPN. While a Branch-Office-VPN only connects several local networks of a company, an extranet VPN is a virtual network that connects the networks of different companies. As a rule, it is about integrating certain services of external companies into your own network or offering services for external companies. For example for business partners, suppliers and companies providing support. The external company is granted access to parts of its own network. Access is restricted by means of a firewall between the local network and the service network. Extranet VPNs enable secure communication and data exchange between the companies involved.
End-to-end VPN describes a VPN scenario in which a client accesses another client in a remote network. The VPN tunnel covers the entire connection between two hosts. Appropriate VPN software must be installed and configured on both sides. As a rule, the connection can only be established with the support of an intermediate station. This means that a direct connection from host to host is not possible. Instead, both sides establish a connection to a gateway, which then interconnects the two connections.
A typical application of an End-to-End-VPN is remote desktop over public networks.
Jitsi Meet is a WebRTC-based conference software. The Chromium (browser) is recommended for use on PCs on most servers, an app is available for Android and iOS. Jitsi apps for Windows, MacOS and Linux are also available. The service can be installed on your own servers.
Jitsi supports presence and instant messages in all protocols. In most cases, file transfer is also possible. (Video) telephony is currently possible with SIP and jingle. The support of the Google variant of Jingle (Google Talk) also enables connections from a Gmail account to Android devices. In addition, Jitsi also offers desktop sharing - that is, sharing your own screen for viewing and operation by the other side.
BigBlueButton is an open source web conferencing system. In addition to various web conferencing services, it integrates with many of the most important learning and content management systems.
BigBlueButton supports the sharing of multiple audio and video formats, presentations with advanced whiteboard functions such as pointers, zooming and drawing, public and private chats, desktop sharing, integrated VoIP with FreeSWITCH and support for the presentation of PDF documents and Microsoft Office documents and subordinate online conference rooms (breakout rooms). In addition, users can participate in the conference in one of two roles: as a viewer or as a moderator.
As a viewer, a user can participate in the voice conference, share his webcam with others, raise his hand and chat with others. As a moderator, a user can mute or unmute others, exclude any user from the session, and make any user the current moderator. The moderator can upload slides and control the presentation.
The digitization of business life, essential production processes and private life is in full swing. At the same time, threats from server failures, viruses and cybercrime are increasing. The whole thing is reinforced by neglecting IT security both in the private sphere and in the business world. Protective mechanisms that are really necessary are usually only considered when the damage has already occurred and the restoration of the IT infrastructure has caused enormous costs.
Linux offers you a secure basis in your IT infrastructure right from the start. On the one hand, because it has always been conceived as an operating system geared towards network operation. On the other hand, because the free availability of the source code makes the possibility of defective or misused functions almost impossible. In addition, “Open Source” has always meant permanent improvement by innovative specialists from all over the world. In the meantime, more and more users trust Linux, which among other things provides the kernel for the numerous Android installations, including companies and institutions such as Siemens, BMW, Lufthansa, Deutsche Post AG, Greenpeace and state institutions including the Federal Commissioner for Data Protection.
You are a company, a medium-sized company, a craft company, a sole trader with the appropriate IT infrastructure and you want to fully satisfy your customers with your products. Or you are a private individual with corresponding support requests. Your IT infrastructure should work reliably around the clock. As an expert in this field, IT-LINUXMAKER can protect your information effectively and quickly. With the services of IT-LINUXMAKER you secure your competitive advantage through the stability of your IT infrastructure and your data.
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