This is particularly useful for companies that have flexible workplace policies or a mobile workforce.Ī VPN typically consists of two components: a network access server combined with client software. In enterprise settings, VPNs allow employees to securely connect to the business’s network and access the resources they need regardless of their location. These connections give remote users access to a private network. If the phone number belongs to a valid, active customer - and has specific properties, such as minutes left or long-distance access - the NAS will allow the call to be completed.Ī network access server can also support network management and optimization processes, such as load balancing, network resource management, and user sessions. The network access server uses credentials, such as IP addresses or phone numbers, to authenticate users rather than individual usernames and passwords. ISPs that supply internet access via modem-like devices, such as cable or DSL, use NAS devices that accept point-to-point protocol, point-to-point tunneling protocol, or point-to-point protocol over ethernet connections for authentication purposes. As such, most are servers that enable ISPs to give their customers access to the internet. One of the major functions of a NAS is to serve as the gateway to protected remote resources. But there a number of functions for network access servers, from connecting directly to the internet to using internet-supported services for direct communication.Ĭommon network access server functions include: We've offered a few examples of NAS deployments. Your computer connects to the network access server, which verifies that you're approved to connect, and then you can start your print job. If you've ever used a printer on the network, you've probably used a NAS too. Your request passes through an NAS to verify and grant access. You may not hear similar beeps and clicks when you log into the internet from a computer at work, but the process remains the same. Without a network access server, none of that work gets done. And the NAS must open a gateway, so the user can read another server. The user's credentials must be verified to ensure proper access. The NAS has a simple, but crucial, job here. Authentication: Once the NAS verifies your access, a window to the internet opens, and you can reach another server.Modem to NAS: The modem sends your password and username to the NAS.Modem connection: The person starts up the computer, connects the modem, and opens a line of communication.(And believe it or not, 2.1 million people still use dial-up systems like this at home right now.) That dial-up process was handled by a NAS. Many years ago, you likely needed to wait for your computer to move through a series of beeps and buzzes before you could reach the internet. You have probably used a NAS even if you didn't realize it. That person must move through the NAS and pass any authentication tests before accessing the resources they need. How Does a NAS (Network Access Server) Work?Ī NAS is a gateway to a wider world of resources for a user.
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