One Article Review
| Source |  AlienVault Blog |
|---|---|
| Identifiant | 1745932 |
| Date de publication | 2020-05-31 11:00:00 (vue: 2020-06-02 11:08:13) |
| Titre | Explain how VPN works |
| Texte | Global health events in 2020 have accelerated a trend. Office workers are working from home more frequently. This is great for many reasons. Companies can save money on office space. People are often more productive in the environment they’re most comfortable in, their homes. Rush hour can be mitigated with fewer cars on the road. When people connect to their company networks from home, cybersecurity is just as important as when they’re working on their employer’s premises. A lot of sensitive data is on those networks. And a man-in-the-middle attack on their remote connections from home can grant an attacker a dangerous amount of access. The most effective way to secure their communication channels between their workplaces and home is by routing through a VPN. Why VPNs are top of mind right now Consumers are also becoming more aware of cyber risks. It’s now understood that all network data should be encrypted, even for everyday internet use. Commercial VPN services have become a popular way to secure internet traffic through both encrypted and unencrypted internet ports. VPN use is on the rise for industries and consumers alike. It’s important to understand how VPN works to optimize both security and functionality. What is a VPN and how does it work? A VPN is a series of virtual connections routed over the internet which encrypts your data as it travels back and forth between your client machine and the internet resources you're using, such as web servers. Many internet protocols have built-in encryption, such as HTTPS, SSH, NNTPS, and LDAPS. So assuming that everything involved is working properly, if you use those ports over a VPN connection, your data is encrypted at least twice! PCs, smartphones, tablets, dedicated servers, and even some IoT devices can be endpoints for a VPN connection. Most of the time your client will need to use a VPN connection application. Some routers also have built-in VPN clients. Unlike proxy networks such as Tor, VPNs shouldn't noticeably slow down your internet traffic under usual circumstances. But some VPNs are faster than others, and one of the most important factors is how many VPN clients are using a VPN server at any given time. A VPN connection usually works like this. Data is transmitted from your client machine to a point in your VPN network. The VPN point encrypts your data and sends it through the internet. Another point in your VPN network decrypts your data and sends it to the appropriate internet resource, such as a web server, an email server, or your company's intranet. Then the internet resource sends data back to a point in your VPN network, where it gets encrypted. That encrypted data is sent through the internet to another point in your VPN network, which decrypts the data and sends it back to your client machine. Easy peasy! Types of VPN technologies Different VPNs can use different encryption standards and technologies. Here's a quick list of some of the technologies that a VPN may use: Point-to-Point Tunneling Protocol: PPTP has been around since the mid 1990s, and it's still frequently used. PPTP in and of itself doesn't do encryption. It tunnels data packets and then uses the GRE protocol for encapsulation. If you're considering a VPN service which uses PPTP, you should keep in mind that security experts such as Bruce Schneier have found the protocol, especially Microsoft's implem |
| Envoyé | Oui |
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