Leased Line, Dial-Up or Internet VPN?

About this interactive

Organizations have always needed to connect sites and remote users, and the ways to do it have changed. In the past, joining a satellite office to headquarters meant renting a connection between the two sites, which could be very expensive. Remote users dialed in: a modem on their computer called a bank of modems at the office over the plain old telephone system. Both options were costly, slow, and did not guarantee security. Now nearly every site and user has internet access, which is much cheaper and faster. The catch is that the internet is a public network. To keep the traffic confidential and intact, the connection runs through a VPN, or technologies built on VPNs such as SD-WAN, or a remote desktop connection. To sort a card, look at what carries the connection: a line rented between two sites, a modem call, or the internet with encryption on top.

What you'll learn

Identify a remote connection as a rented line between sites, dial-up over phone lines, or the internet with a VPN
Explain why the internet replaced rented lines and dial-up (cheaper and faster) and why it needs a VPN (it is a public network)

Aligned to

CompTIA Security+

3.2 Given a scenario, apply security principles to secure enterprise infrastructure.

Key terms

Virtual Private Network: A technology that creates a secure, encrypted tunnel over a public network to protect data in transit.
Wide Area Network: A network that spans a large geographic area, connecting multiple local area networks.
Confidentiality: The principle that information is accessible only to those authorized to access it.
Tunnel: A secure, encapsulated communication path established over a public network to carry private network traffic between endpoints.

Topics

Interactive Categorize

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