برای کارکرد PPTP ‌باید در ابتدا یک کانال کنترلی راه‌اندازی شود که برای ایجاد یک Tunnel داده مورد استفاده قرار گیرد. این Tunnel داده با GRE، Encapsulate می‌گردد که یک PPP Frame را حمل می‌کند ؛ PPP از حمل چندین پروتکل از جمله IP پشتیبانی می‌نماید. همچنین PPP از احراز هویت، رمزگذاری و فشرده‌سازی پشتیبانی می‌کند.

در واقع PPTP از نظر پیکربندی یکی از ساده‌ترین پروتکل‌هاست، اما از نظر محرمانه بودن دارای نقاط ضعف شناخته‌شده‌ای می‌باشد. دلیل این امر این است که PPTP برای پشتیبانی از رمز‌گذاری RC4 که دارای آسیب‌پذیری‌های شناخته ‌شده است عمدتا از Microsoft Point-to-Point Encryption یا به اختصار MPPE استفاده می‌نماید.
درباره Secure Sockets Layer (SSL) VPN

یکی از تکنولوژی‌های VPN که اخیرا بسیار مورد توجه قرار گرفته SSL VPN است؛ دلیل اصلی این اقبال تحولاتی مختلف در اعمال آن است که پیاده‌سازی و استفاده از آن را تسهیل می‌نماید. در گذشته از SSL VPN عمدتا برای پشتیبانی از طریق یک پورتال مرکزی استفاده می‌شد که پشتیبانی محدودی برای مجموعه‌ی خاصی از پروتکل‌ها ارائه می‌نمود. پیاده‌سازی‌های مدرن قابلیت پشتیبانی از گزینه‌ی SSL VPN مبتنی بر Client و همچنین Clientless را فراهم می‌نمایند؛ پیاده‌سازی‌های Clientless در قیاس با پیاده‌سازی‌های مبتنی بر Client محدودتر هستند، اما برای پیاده‌سازی، بسیار سبک‌تر می‌باشند چراکه هیچ‌چیز به طور دائم روی Client بارگذاری نشده است.

نام Secure Sockets Layer یا به اختصار SSL برای اکثر کاربران اینترنت اهل تکنولوژی نامی آشناست، زیرا یکی از پروتکل‌هایی است که توسط مرورگر‌های وب و Clientهای انتقال فایل برای ایمن‌سازی ارتباطات مورد استفاده قرار می‌گیرد. VPN‌های SSL از تکنولوژی یکسانی برای فراهم کردن کانالی ایمن برای بسیاری از پروتکل‌ها استفاده می‌نمایند. یکی از برتری‌های اصلی VPN‌های SSL نسبت به راهکار‌های دیگر این است که این راهکار از تعدادی پروتکل متداول که برای امنیت ترافیک وب مورد استفاده قرار می‌گیرد، استفاده می‌کند. این پورت‌ها تقریبا به طور جهانی روی تمام اتصالات اینترنت Forward می‌شوند و در نتیجه Session‌ها Block نخواهند شد (مشکلی که در برخی از گزینه‌های دیگری که مطرح شد وجود دارد).

با افزایش سرعت، قابلیت اطمینان و دسترس‌پذیری اتصالات اینترنتی، استفاده از VPN‌ها بیش از پیش افزایش یافته است. شرکت‌های بسیاری اتصالات دفتری Remote خود را از اتصالات خطوط استیجاری (Leased-Line) گران‌قیمت به اتصالات VPN مبتنی بر اینترنت منتقل کرده‌اند که به احتمال زیاد با ادامه یافتن گسترش سرعت و اتصالات، این روند همچنان به رشد خود ادامه خواهد داد.
#network #vpn @unixmens

#security #vpn @unixmens

8. Comparison with Traditional VPNs:
- Performance: WireGuard outperforms traditional VPN protocols like OpenVPN and IPSec in terms of speed and latency, especially on mobile and embedded devices.
- Simplicity: WireGuard's configuration and deployment are simpler, making it easier to set up and maintain.
- Security: With a focus on modern cryptographic practices and minimal codebase, WireGuard is considered more secure than many older VPN solutions.

In summary, WireGuard’s architecture is designed to be simple, fast, and secure, making it a modern solution for VPN needs. Its minimalist approach to configuration, use of cutting-edge cryptography, and efficient performance make it an attractive choice for both individuals and organizations.

#wireguard #vpn #tap #tun

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Cloudflare chose to use WireGuard as the underlying technology for their WARP service due to several key advantages that align with their goals of providing a fast, secure, and efficient VPN service. Here's why:
1. Performance:

High Speed and Low Latency: WireGuard is known for its minimal overhead and efficient handling of network packets, leading to faster connection speeds and lower latency compared to traditional VPN protocols like OpenVPN or IPSec. This performance is critical for WARP, which aims to improve internet speed and responsiveness for users.

2. Security:

Modern Cryptography: WireGuard uses state-of-the-art cryptographic techniques such as ChaCha20 for encryption and Curve25519 for key exchange, which are both secure and efficient. By using WireGuard, WARP benefits from these strong security guarantees, ensuring that user data is protected during transmission.
Simplified Codebase: WireGuard has a much smaller and simpler codebase than other VPN protocols. This simplicity reduces the risk of vulnerabilities and makes the protocol easier to audit, contributing to a more secure service.

3. Efficiency:

Resource Efficiency: WireGuard’s lean design and kernel-space implementation mean it consumes fewer CPU and memory resources. This efficiency is particularly important for WARP, which is designed to run smoothly on mobile devices without draining battery life or slowing down the device.
Cross-Platform Support: WireGuard’s ability to run efficiently on various platforms, including Linux, Windows, macOS, iOS, and Android, allows Cloudflare to provide WARP across multiple devices with consistent performance.

4. Simplicity:

Easy Configuration: WireGuard’s straightforward configuration process aligns with Cloudflare’s goal of making WARP easy to use for the average consumer. Users don’t need to deal with complex VPN settings; instead, they can just turn on WARP and enjoy a more secure and faster internet connection.
Quick Connection Establishment: WireGuard establishes VPN connections quickly, which is important for WARP’s user experience, where users expect a seamless and immediate connection when they enable the service.

5. Innovative Features:

Mobility Handling: WireGuard’s design is well-suited for mobile users who frequently switch between networks (e.g., from Wi-Fi to cellular). It handles changes in network conditions gracefully without dropping the connection, providing a smooth experience for WARP users.

6. Alignment with Cloudflare’s Vision:

Internet Optimization: Cloudflare’s mission with WARP is not just to provide a traditional VPN but to enhance the overall internet experience by improving performance and security. WireGuard’s efficiency and security make it a perfect match for this goal.
Future-Proof Technology: WireGuard is seen as the future of VPN technology, given its modern approach and widespread adoption. By building WARP on WireGuard, Cloudflare ensures that their service remains at the forefront of VPN innovation.

#wg #WireGuard #linux #vpn #warp #Cloudflare

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WireGuard: Next Generation Kernel Network Tunnel

#wireguard #linux #tun #tap #vpn
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Multipath Extensions for WireGuard

#devops #net #wireguard #vpn #datacenter #book

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Type of #VPN

#security

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The different types of VPNs And Communication used in businesses 🔐

In the world of networking, protecting data and ensuring secure communication between branches and employees has become something that we can not overlook. This is where VPNs come into play, each serving specific needs. Let us get acquainted with the types in detail:

Site-to-Site VPN:

This type is used to connect two or more networks in different geographical locations. For example, if you have a head office in Riyadh and other branches in Dammam and Jeddah, a Site-to-Site VPN connects them online in an encrypted and secure way. It has two main types of this VPN:

• Intranet VPN: Used when all branches belong to the same company, it means that you connect your internal network more widely.
• Extranet VPN: If you partner with a second company or supplier, you use this type to connect your network to theirs in a secure way.

Purpose: Connects two or more geographically separated networks securely.

Remote Access VPN:

This type is intended for employees who work remotely or need to connect to the company's network from outside the office. Whether you're at home or at a hotel, you can connect to your corporate network just like you're in the office. Remote Access VPN guarantees you an encrypted and reliable connection, which is an essential feature for employees who need flexibility to work remotely.

SSL VPN

is an easy and flexible solution to access some applications within the corporate network through the browser only. I mean, what needs to settle complex settings on the device.
All you need is a browser that supports HTTPS, and you have a secure and encrypted connection to the desired applications. This type is ideal if there are employees using external devices that are not owned by the company.



MPLS VPN

MPLS VPN (Multiprotocol Label Switching VPN) uses a proprietary protocol that provides fast and secure communication between the different locations of the company over a completely private network provided by telecommunications companies. Well
This type of VPN is not only based on the Internet, but on a completely independent network that guarantees you high stability and greater security. It is widely used in large companies that need high security and stability.

Purpose: Offers high-speed and secure communication between company locations over a dedicated, private network.
Key Features: Guaranteed stability, high security, suitable for large businesses with critical data security needs.


Other Hand :

GRE
What is a GRE tunnel in networking?

GRE (Generic Routing Encapsulation) tunnels encapsulate network packets inside new network packets. A virtual link is established between two hosts, allowing the hosts to communicate as if they were directly connected.

Advantages of GRE for VPNs:

Flexibility: GRE can be used to create VPN tunnels between various types of networks, including networks with different protocols or addressing schemes.
Customization:offers flexibility in configuring the tunnel, allowing for options like multiple tunnels or different encryption methods.
Widely Supported: supported on most routers and network devices, making it a readily available tunneling option


IPsec VPN:

Depends on protocol
Internet Protocol Security (IPsec)
to secure communication between two networks. EThe type is commonly used in Site-to-Site or Remote Access. It features strong data encryption and provides high protection against threats.

Hybrid VPN:

It combines more than one type of VPN at the same time. For example, you can use Site-to-Site VPN to connect branches and Remote Access VPN for remote employees. This type is suitable for large companies that need multiple solutions according to network requirements.

Cloud VPN:

With the spread of cloud services, Cloud VPN has become one of the important solutions to connect the company's network with the services in
Cloud such as AWS, Google Cloud, or Azure.


#VPN #NetworkSecurity #Cybersecurity #RemoteAccess #SiteToSiteVPN #MPLSVPN


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