Definition of VPN
A virtual private network (VPN) is a type of network technology that allows users to connect to a private network via a public network (e.g. the Internet). VPNs can be of different types, which differ in the way they work.
VPNs offer a number of benefits, including increased security and privacy. Since they work over the Internet, they can be used from anywhere in the world. They also offer increased bandwidth, since they improve network connections between different locations.
One disadvantage of VPNs is that they consume a lot of energy, since they need to be active all the time. They can also slow down the network's speed, especially if many users access it simultaneously. Another disadvantage is that they can be expensive.
Examples of VPN types
1. P2P or remote access VPN:
- What it does: Allows individual users to access a private network from a remote location.
- Application: For example, if you want to work from home and access the corporate network.
- ExampleYou work from home and need access to the files on your office computer. No problem with a P2P VPN!
2. site-to-site VPN:
- What it does: Connects two networks via the Internet.
- Application: Often used between different office locations of a company.
- Example: You have a company with offices in Berlin and Munich. With a site-to-site VPN, the two networks can connect as if they were local.
3. VPNs for data protection and anonymity:
- What it does: Hides your IP address and encrypts your Internet traffic to keep your online activities private.
- ApplicationFor all those who want to surf the Internet anonymously, bypass geoblocking or use public WLANs more securely.
- ExampleYou are on vacation and want to use the streaming service from your home country. With a VPN that changes your IP address, you can!
4. mobile VPN:
- What it does: A special VPN for mobile devices that can withstand constant switching between networks and disconnections without data loss or interruption.
- Application: For people who travel a lot and often log into different networks.
- ExampleAs a journalist, you travel constantly and often work from cafés or trains. A mobile VPN ensures that you always stay securely and stably connected.
5. hardware VPN:
- What it does: A physical device that offers VPN capabilities, usually with better performance and more security.
- Application: Often used in larger enterprises or for special use cases where software VPNs are not sufficient.
- ExampleYour company has a server room with a lot of sensitive data. A hardware VPN secures access to it particularly well.
In conclusionSo which VPN you need really depends on what you want to do. For most home users, a VPN for privacy and anonymity might be the most interesting. But as with anything, do your research before choosing a product, and always think about the purpose it's going to serve. Surf safely! 🏄♂️🌐🔒
VPNs can be used in many different areas, including companies that want to establish secure connections between their sites, or people who want to access private data from the Internet. They can also be used to facilitate file sharing or content streaming.
Advantages of PPTP (Point-to-Point Tunneling Protocol) VPNs:
- Easy setup: PPTP VPNs are easy to set up and configure. You just need to select the VPN protocol and enter your credentials, and you're connected.
- Compatibility: PPTP VPNs are compatible with a wide range of operating systems, including Windows, Mac, Linux, and even some smartphones and tablets.
- Speed: PPTP VPNs are faster than some other VPN protocols because they use less overhead and encryption.
- Safety: PPTP VPNs provide a certain level of security by encrypting the connection and thus protecting the data from unauthorized access.
- Cost Efficiency: PPTP VPNs tend to be more cost-effective than other VPN protocols because they require less processing power and bandwidth.
However, it is important to note that PPTP VPNs are not as secure as other VPN protocols such as OpenVPN or L2TP/IPSec and should not be used for sensitive data or businesses.
Name disadvantages of PPTP:
- Safety: PPTP uses weaker encryption than other VPN protocols such as OpenVPN or L2TP/IPSec, which makes it more vulnerable to hacking and data leakage.
- Support: PPTP is supported by fewer and fewer operating systems and devices, so it may not be the best choice for use with newer technologies.
- Speed: PPTP can affect Internet speed, especially when used on a poor Internet connection or when many users are connected at the same time.
- Problems with NAT: PPTP can have difficulty traversing NAT (Network Address Translation) and therefore may not be the best choice for use in enterprise networks.
- No support for mobile devices: PPTP does not have native support for mobile devices such as smartphones and tablets and can therefore only be used via third-party apps.
Advantages of OpenVPNs:
- Safety: OpenVPNs use strong encryption to protect your data from prying eyes when you're on a public WLAN, for example.
- Flexibility: OpenVPNs are cross-platform and work on almost any device, whether it's a PC, smartphone or tablet.
- Anonymity: OpenVPNs allow you to hide your IP address and thus hide your online activities from third parties.
- Access to blocked content: If you live in a country where certain websites are blocked, an OpenVPN can help you access them.
- Increased performance: OpenVPNs can increase your internet speed, especially if you travel abroad a lot and need to access content that is otherwise blocked in your home country.
Disadvantages of OpenVPNs:
- Complexity: OpenVPNs can be a bit complex, especially for beginners who are not familiar with them. It can take some time to set them up properly and understand how they work.
- Speed: Although OpenVPNs are able to increase your internet speed, encryption can also cause it to decrease.
- Cost: Some OpenVPN services are free, but many require a subscription or one-time payment.
- Dependence on Internet connection: OpenVPNs require a stable and fast internet connection to work properly, which can be a problem in some areas.
- Legal Restrictions: In some countries, the use of OpenVPNs is prohibited or restricted. It is important to be aware of the legislation in your country before using an OpenVPN.
OpenVPN VPN service provider:
- NordVPN: NordVPN is a popular VPN provider that offers OpenVPN as one of its supported protocols.
- ExpressVPN: ExpressVPN is another popular VPN provider that offers OpenVPN as one of its supported protocols.
- CyberGhost: CyberGhost is another VPN provider that offers OpenVPN as one of its supported protocols.
- Surfshark: Surfshark is a VPN provider that offers OpenVPN as one of its supported protocols.
- Private Internet Access (PIA): PIA is another VPN provider that offers OpenVPN as one of its supported protocols.
Imagine you have a superhero cape. Every time you put it on, your identity is hidden and you can stroll around the city unnoticed. A VPN is effectively this cape for your online activities.
1. Anonymity and privacy: Every one of us has that little bit of paranoia when it comes to surfing, right? Who's watching? With a VPN, it's like you're going through a secret tunnel where no one can see in. You surf anonymously, and no one knows it's you.
2. Pure freedomSome websites or services are blocked in certain countries. A VPN is like your ticket to an exclusive club - you can get in where others cannot. For example, you can watch the US version of Netflix even if you're in Timbuktu.
3. Safety on steroidsOpen WLANs in cafés or train stations are like open doors for cybercriminals. With a VPN, you build a kind of security bubble around it. It's like sitting in a coffee house, but in a bulletproof booth.
4. No more geo-blockingVPNs are like the world's best passport. You can pretend you're in another country and get access to their Content. It's like you're wearing a shirt that says "I'm at home everywhere."
5. Possible restrictionsHere's the catch - not all that glitters is gold. Sometimes VPNs can reduce your browsing speed because traffic is diverted. It's like taking a detour in your car to avoid the traffic jam. Sometimes it's faster, sometimes it's not.
Short and sweetA VPN is like a combination of a superhero cape, a VIP pass and a bulletproof vest for the Internet. It gives you freedom, security and anonymity. But as with anything super cool, there are a few little pitfalls. So, put on the cape, but check first whether it's really wind- and weatherproof! 🦸♂️🌐🔒« Back to Glossary Index