SD-WAN and virtual private network.
Among them, remote access is the most common type of virtual private network, allowing users to access corporate resources without directly connecting to the corporate network. Remote access is usually a temporary connection and will be closed when the user completes their work. To ensure privacy, secure channels are established between user endpoints (such as laptops, mobile devices, or home computers) to establish calls and perform certain authentications such as passwords, tokens, and biometrics. Sometimes the username and password are embedded in the client's virtual private network software to facilitate user connections, but always require some form of authentication.
The advantage of remote access is that all employees in the enterprise can connect to the company's resources regardless of where they are and do not need a dedicated physical link. Not only does this reduce costs, but it also enables connections that were previously impossible. But at the same time, its shortcomings are obvious. With remote access through a virtual private network, performance can vary widely due to a variety of factors. These factors include the Internet service being used, the encryption method, and the endpoint to which the user is connected. These issues go far beyond the control of the company's IT department, making it difficult to improve performance.
Any enterprise service can be accessed through remote access to a virtual private network, and most enterprise services can run, but applications that consume large amounts of bandwidth or have low latency requirements can be greatly affected.
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