sábado, 21 de setembro de 2024

How to Install VirtualBox on a Linux VPS

 

How to Install VirtualBox on a Linux VPS

To install VirtualBox on a Linux VPS, you need to follow several steps depending on the Linux distribution you are using. This guide will walk you through the installation process for Debian/Ubuntu and CentOS/RHEL/Fedora based distributions.

1. Installing VirtualBox on Ubuntu/Debian

Follow these steps to install VirtualBox on a VPS running Debian or Ubuntu:

Step 1: Update the System

First, ensure that the system packages are up to date.

bash
sudo apt update sudo apt upgrade

Step 2: Add the VirtualBox Repository

Add the official VirtualBox repository to the system.

bash
sudo apt install software-properties-common sudo add-apt-repository "deb [arch=amd64] https://download.virtualbox.org/virtualbox/debian $(lsb_release -cs) contrib"

Step 3: Import the VirtualBox PGP Key

Import the signing key for the VirtualBox repository.

bash
wget https://www.virtualbox.org/download/oracle_vbox_2016.asc sudo apt-key add oracle_vbox_2016.asc

Step 4: Install VirtualBox

Now, install VirtualBox (replace 7.0 with the latest version if necessary).

bash
sudo apt update sudo apt install virtualbox-7.0

Step 5: Verify Installation

Check if VirtualBox was installed correctly by verifying the version.

bash
vboxmanage --version

2. Installing VirtualBox on CentOS/RHEL/Fedora

If your VPS is running a CentOS/RHEL or Fedora based distribution, follow these steps:

Step 1: Add the VirtualBox Repository

Add the official VirtualBox repository.

  • CentOS/RHEL 7:
bash
sudo yum install -y epel-release sudo wget https://www.virtualbox.org/download/oracle_vbox.asc sudo rpm --import oracle_vbox.asc sudo yum install -y https://download.virtualbox.org/virtualbox/rpm/el/virtualbox.repo
  • CentOS/RHEL 8+ or Fedora:
bash
sudo dnf install -y epel-release sudo wget https://www.virtualbox.org/download/oracle_vbox.asc sudo rpm --import oracle_vbox.asc sudo dnf install -y https://download.virtualbox.org/virtualbox/rpm/el/virtualbox.repo

Step 2: Install Dependencies

Before installing VirtualBox, install some necessary dependencies:

bash
sudo yum install -y gcc make perl kernel-devel kernel-headers

Step 3: Install VirtualBox

Install the latest version of VirtualBox (replace 7.0 with the required version):

bash
sudo yum install -y VirtualBox-7.0

Step 4: Load the Kernel Module

After installation, ensure the VirtualBox kernel module is loaded:

bash
sudo /sbin/vboxconfig

Step 5: Verify Installation

Check if VirtualBox is installed correctly by verifying the version:

bash
vboxmanage --version

Final Considerations

  1. Hardware Resources: Installing VirtualBox on a VPS can be tricky because not all VPS providers offer support for nested virtualization. Check with your VPS provider if nested virtualization is supported, as this is crucial for running virtual machines inside a virtualized environment.

  2. KVM and Other Hypervisors: In many cases, VPS providers use KVM as their hypervisor, which may conflict with VirtualBox. Be sure to verify compatibility between VirtualBox and any other hypervisors running on your VPS.

By following these steps, you should be able to successfully install VirtualBox on your Linux VPS.

quinta-feira, 19 de setembro de 2024

9 Remote Jobs You Can ACTUALLY Do With No Degree

 

The Rise of Alternative Careers: A Guide to Thriving Without a Traditional College Degree

WJ had a dream: to earn a degree in communications with a minor in 17th-century French intersectional gender studies. It seemed like a path toward academic fulfillment and, ultimately, a successful career. After spending $150,000 and investing five years of his life, he was confident that the world would value his degree and offer opportunities to pay off his student loans. However, as he started applying to jobs, reality hit hard—his degree didn’t carry the weight he expected. WJ found himself in the difficult position that many graduates face today: drowning in debt with few viable career prospects.

While WJ’s story may sound all too familiar, it doesn’t have to be the case for everyone. In today’s job market, you don’t need an expensive college degree to land a well-paying job or find fulfilling work. What if I told you that you could earn $40 an hour from the comfort of your own home with zero money, zero experience, and no need for a degree? And what makes these opportunities even better is that they are often easier to get into than traditional jobs. In some cases, you can start working and earning money almost immediately.

So, let's jump into a few of these opportunities, starting with a lesser-known but lucrative role.

1. Pre-Certification Specialist

If you’re interested in a stable and steady job, becoming a Pre-Certification Specialist is an excellent choice. Contrary to what the name might suggest, this job has nothing to do with certificates. It involves creating surgery plans and getting insurance approvals for scheduled medical procedures, ensuring that patients aren’t caught off guard by insurance surprises. Essentially, you become an insurance wizard, making sure everything runs smoothly behind the scenes.

Pre-Certification Specialists earn between $37,000 and $55,000 a year, and it’s an entry-level position that doesn’t require a degree or previous experience. Similar roles include Insurance Verification Coordinator ($41,000–$56,000) and Pre-Certification Supervisor ($50,000–$72,000).

If you’re interested in learning more, there are free or inexpensive online courses available on medical billing, coding, and healthcare administration. This makes it easy to acquire the skills you need without spending years in school. I’d rate this an 8 out of 10 as a solid career opportunity.

2. Brand Educator (Brand Ambassador)

For those who prefer working in marketing, becoming a Brand Educator or Brand Ambassador could be a rewarding choice. In this role, you get to engage with consumers, educate them about a brand’s products, and help increase sales and brand awareness. This is like being an enthusiastic tour guide for various brands, leading consumers on a journey of discovery.

Brand Educators can earn between $41,000 and $70,000 annually, often working with marketing agencies or directly for brands. This role is especially valuable if you’re thinking about starting your own YouTube channel or building a personal brand in the future. It’s a fantastic stepping stone for those who want to break into the digital marketing space.

I’d give this job an 8.5 out of 10, especially for its potential to pave the way toward even greater opportunities.

3. Property and Casualty Insurance Producer

If you’re drawn to helping people protect their assets, working as a Property and Casualty Insurance Producer might be your calling. In this role, you guide clients through making the right insurance decisions, helping them protect their property and assets. You can expect to earn between $58,000 and $100,000 a year.

No college degree or prior experience is required, but taking insurance licensing courses or getting some sales training can give you a competitive edge. This is a high-paying, stable career that’s easy to break into.

I’d rate this opportunity an 8.5 out of 10.

4. Community Coordinator

If you have strong organizational and interpersonal skills, becoming a Community Coordinator could be a great fit. In this role, you help build and nurture communities, often within industries like publishing. Community Coordinators earn between $42,000 and $59,000 annually, and this role is pivotal in fostering engagement within various groups.

It’s an entry-level position that typically doesn’t require a college degree. For those with experience, higher-level roles like Senior Community Coordinator and Community Manager offer even more earning potential.

I’d give this career path an 8 out of 10 for its mix of creativity and organization.

5. Admissions Representative

If you enjoy helping others navigate important life decisions, consider becoming an Admissions Representative. In this role, you guide prospective students through their college application journey, helping them find the right fit and ensuring that their educational goals align with the institution.

The surprising part? Many admissions jobs don’t require a college degree! Admissions Representatives make between $56,000 and $81,000 annually, and similar positions include Admissions Manager and Director of Customer Services, both of which offer great earning potential.

This is a solid, well-paying job that’s easy to get into. I’d give it a 7.5 out of 10.


These are just a few examples of remote jobs and alternative career paths that offer good pay, stability, and require little to no formal education. Whether you’re interested in healthcare, marketing, or community-building, there are numerous opportunities out there for you to explore. In an ever-evolving job market, traditional college degrees are no longer the only path to success.

Remember, the key is to look for positions that match your skills and interests and to continuously develop those skills through training, workshops, or certifications—many of which are free or low-cost.

The future of work is flexible, accessible, and filled with hidden gems waiting to be uncovered. Don't let the weight of traditional expectations hold you back; a rewarding and fulfilling career could be just a few clicks away.

sexta-feira, 13 de setembro de 2024

The Key Difference Between an IPv4 Proxy and an IPv6 Proxy

The Key Difference Between an IPv4 Proxy and an IPv6 Proxy

The primary difference between an IPv4 proxy and an IPv6 proxy lies in the type of IP address they use and how these addresses function within a network. Here are the main distinctions:

1. Address Format

  • IPv4 (Internet Protocol version 4):

    • IPv4 uses a 32-bit format, resulting in a numerical address divided into four groups of up to three digits (e.g., 192.168.1.1).
    • There are approximately 4.3 billion IPv4 addresses available, and most of these have already been allocated, leading to a shortage of available addresses.
  • IPv6 (Internet Protocol version 6):

    • IPv6 uses a 128-bit format, resulting in much longer hexadecimal addresses divided into eight groups of four digits (e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334).
    • It offers an almost unlimited number of addresses (340 undecillion), solving the scarcity problem of IPv4.

2. Addressing Capacity

  • IPv4:

    • With the exhaustion of available IPv4 addresses, proxies using this protocol can be more expensive or limited in availability.
    • There may be issues with IP address sharing between multiple users, which can impact privacy and performance.
  • IPv6:

    • IPv6 proxies are far more abundant due to the immense number of available addresses. This provides a solution to IPv4 shortages and allows for greater privacy and exclusive use of IPs.
    • However, IPv6 is not yet fully supported on all networks and devices, although adoption is steadily increasing.

3. Compatibility

  • IPv4:

    • IPv4 is the most widely used protocol, and almost all devices and networks are compatible with it.
  • IPv6:

    • While IPv6 is becoming more common, some older systems and networks may not fully support it. This can limit the functionality of IPv6 proxies in certain scenarios.

4. Performance and Latency

  • IPv4:

    • In some cases, IPv4 proxies may experience slightly higher latency, especially in regions where addresses are shared among many users.
  • IPv6:

    • In situations where IPv6 is well-supported, it can offer a more direct network route, resulting in lower latency and faster performance.

5. Security

  • IPv4:

    • IPv4 requires additional security measures, such as NAT (Network Address Translation), to handle private addresses, which can add a layer of protection.
  • IPv6:

    • IPv6 was developed with built-in security features like IPsec, although this is not always implemented. Additionally, the vast number of addresses makes IP scanning attacks much more difficult.

6. Use in Proxies

  • IPv4 Proxy:

    • Widely used and often required to access resources or websites that do not yet support IPv6.
  • IPv6 Proxy:

    • Ideal for more modern networks and can be more cost-effective and efficient due to the larger availability of addresses. However, a dual-stack proxy (supporting both IPv4 and IPv6) may be necessary to ensure full compatibility with all networks.

Summary:

  • IPv4: More common, limited in the number of available addresses, and broadly compatible with most systems.
  • IPv6: More modern, with a vastly larger number of available addresses, but still in the process of full adoption.

The choice between an IPv4 and IPv6 proxy depends on compatibility and the network requirements you are working with. IPv6 proxies offer a forward-looking solution with better scalability and privacy, but IPv4 remains essential in many situations due to its widespread use and support.

segunda-feira, 9 de setembro de 2024

Top 10 Freelance Platforms: A Detailed Overview

Top 10 Freelance Platforms: A Detailed Overview

The freelance industry has seen tremendous growth, offering businesses and individuals the opportunity to connect with professionals in various fields. Below is a detailed overview of 10 leading freelance platforms, highlighting their unique features, advantages, and ideal use cases.


1. Upwork

Description:
Upwork is one of the largest freelance platforms globally, allowing clients to find professionals in nearly any sector, from web development to digital marketing. The platform offers a wide range of skilled freelancers, catering to small businesses and large enterprises alike.

Key Features:

  • Supports both hourly and fixed-price projects.
  • Trusted by large companies for high-end projects.

Ideal For:
Long-term, complex projects that require dedicated freelancers.


2. Freelancer.com

Description:
Freelancer.com is a global platform offering freelancers in areas such as IT, graphic design, marketing, writing, and more. The platform works on a bidding system, where freelancers compete to win projects by submitting proposals based on the client’s requirements.

Key Features:

  • Offers a wide variety of freelancers at different price points.
  • Includes an option for clients to hold contests for projects.

Ideal For:
Small to medium-sized projects with flexible budgets, especially those looking to hold contests for creative work.


3. PeoplePerHour

Description:
PeoplePerHour allows clients to hire freelancers based on either hourly rates or for specific projects. It's popular for services related to design, marketing, and web development, and has a large European user base.

Key Features:

  • Strong focus on freelancers from Europe.
  • Supports payment by the hour or project.

Ideal For:
Short-term projects and hiring freelancers on an hourly basis.


4. Guru

Description:
Guru offers a wide range of freelance services, including software development, design, and business consulting. It provides detailed freelancer profiles to help clients evaluate professionals before hiring.

Key Features:

  • Flexible payment options, including hourly, project-based, or task-based payments.
  • Easy project management and collaboration tools.

Ideal For:
Complex projects and long-term contracts that require flexibility in payment and management.


5. Toptal

Description:
Toptal is a premium freelance platform that connects companies with the top 3% of freelancers in the world, particularly in the fields of software development, design, and finance.

Key Features:

  • Only highly qualified freelancers are accepted on the platform.
  • Focuses on high-quality, premium service for complex projects.

Ideal For:
High-complexity projects that demand top-tier talent and experienced professionals.


6. 99Designs

Description:
99Designs is a freelance platform focused on graphic design. It connects clients with designers to create logos, websites, marketing materials, and more. The platform primarily operates through design contests, where clients select the best submission.

Key Features:

  • Specializes in graphic design services.
  • Contest-based model allows clients to choose from multiple designs.

Ideal For:
Graphic design, branding, and visual identity projects, particularly for logo design and marketing materials.


7. Truelancer

Description:
Truelancer offers a wide variety of freelance services at competitive prices, focusing on areas such as web development, writing, and graphic design. It is known for having freelancers from emerging markets, making it more affordable for small businesses.

Key Features:

  • Cost-effective platform with a focus on emerging markets.
  • Offers a wide variety of freelance services.

Ideal For:
Small businesses and startups with limited budgets that need affordable freelance talent.


8. SolidGigs

Description:
SolidGigs differs from other platforms by curating high-quality freelance job opportunities and sending them directly to freelancers. It focuses on providing freelancers with premium, vetted job leads, rather than having them bid for work.

Key Features:

  • Curates top freelance gigs and job offers.
  • Saves freelancers time by delivering high-quality leads directly.

Ideal For:
Freelancers who actively seek work and prefer curated job offers over competitive bidding.


9. DesignCrowd

Description:
DesignCrowd, similar to 99Designs, focuses on graphic design services. Clients can hold design contests or hire freelancers directly for projects, including logo creation, web design, and marketing collateral.

Key Features:

  • Large community of designers and option for design contests.
  • Allows direct hiring for specific projects.

Ideal For:
Businesses looking for creative design solutions, including logo design and web design through a contest-based or direct-hire approach.


10. TaskRabbit

Description:
TaskRabbit is unique compared to the other platforms listed as it focuses on local, manual services. Freelancers on TaskRabbit offer services such as furniture assembly, moving help, cleaning, and home repairs. The platform is especially popular in large urban areas.

Key Features:

  • Connects clients with freelancers for local, hands-on tasks.
  • Ideal for manual labor or physical services.

Ideal For:
Clients looking for help with manual or in-person tasks like home repairs, assembly, or physical assistance.


Conclusion

Each freelance platform offers unique benefits depending on the nature of the project and budget. Whether you're looking for a top-tier software developer on Toptal, a talented designer on 99Designs, or affordable freelancers on Truelancer, there's a platform suited for your needs. By understanding the strengths and features of these platforms, you can make an informed decision about where to find the right freelance talent for your business.

Using Multiple IP Addresses on the Same Network Through a RouterBoard

 

Using Multiple IP Addresses on the Same Network Through a RouterBoard

In modern networking, there are various scenarios where using multiple IP addresses on the same network is essential. Whether you’re running multiple servers, hosting various services, or managing distinct internal subnets, having the ability to assign and manage multiple IP addresses through a RouterBoard (typically from MikroTik) offers flexibility and control. This guide explores how you can configure and manage multiple IP addresses on the same network using a RouterBoard device.

1. Understanding the Need for Multiple IP Addresses

Using multiple IP addresses within the same network provides several benefits:

  • Segmentation of services: Different IP addresses can be used to separate various services or applications running within the same network.
  • Network Management: You can assign different IPs to devices based on their roles (e.g., printers, servers, clients).
  • Hosting multiple services: If you're hosting multiple websites or applications, each may require its own IP address for identification or security.
  • Traffic Routing: It allows finer control of traffic routing across multiple interfaces or network segments.

2. What is MikroTik RouterBoard?

MikroTik's RouterBoard devices are highly versatile, offering robust routing, firewall, and traffic management capabilities. RouterBoards allow users to assign multiple IP addresses to a single network interface or across different interfaces, making it an ideal choice for advanced network configurations, such as using multiple IP addresses on the same network.

3. Setting Up Multiple IP Addresses on a RouterBoard

Here is a step-by-step guide on how to configure multiple IP addresses on a MikroTik RouterBoard.

Step 1: Access the RouterBoard Interface

To begin, access the RouterBoard through Winbox (MikroTik's management tool) or via a web browser. Connect to the RouterBoard using its default IP address (typically 192.168.88.1).

Step 2: Assigning Multiple IP Addresses

  1. Open the IP Addresses Menu: Once inside the Winbox interface, navigate to IP > Addresses. This is where you manage the IP addresses assigned to different interfaces on the RouterBoard.

  2. Add a New IP Address:

    • Click the "+" button to add a new IP address.
    • Enter the desired IP address (e.g., 192.168.1.10/24) in the Address field.
    • In the Interface field, select the interface (e.g., ether1 or bridge1) where the IP address will be assigned.
    • Click OK to save.
  3. Repeat the Process for Additional IPs:

    • Add each additional IP address you need to configure. For instance, you can add 192.168.1.11/24, 192.168.1.12/24, and so on.
  4. Verify IP Assignments:

    • Once all IPs are added, you can verify their assignments by checking the list in IP > Addresses. Each IP should be correctly assigned to the desired interface.

Step 3: Configuring NAT (if necessary)

If you're using multiple IP addresses that need to access the internet or communicate with other networks, you might need to set up Network Address Translation (NAT).

  1. Go to NAT Settings:

    • Navigate to IP > Firewall > NAT.
  2. Create a New NAT Rule:

    • Click the "+" button to create a new NAT rule.
    • In the Chain field, select srcnat.
    • In the Out Interface field, choose the outgoing interface (typically your WAN interface, e.g., ether1).
    • In the Action tab, set the action to masquerade. This ensures that traffic originating from your local IP addresses will be translated when accessing the internet.
  3. Apply the Rule:

    • Click OK to apply the NAT rule. Repeat for each additional IP address if necessary.

Step 4: Configure Routing (for Multiple WAN or Specific Traffic Paths)

If you have multiple WAN connections or need to route traffic through specific paths based on the IP addresses assigned, you may need to configure routing rules.

  1. Go to Routing Settings:

    • Navigate to IP > Routes.
  2. Add a New Route:

    • Click the "+" button to add a new route.
    • Specify the destination network (if you want to route traffic to a specific external network) or leave it default for general internet traffic.
    • Select the gateway (your external IP or default gateway) and interface.
  3. Save and Test:

    • Once routes are configured, you can test the connection by pinging external addresses from the various IPs or using tools like Traceroute.

4. Managing Multiple Subnets with VLANs

In more complex environments, you might want to separate traffic using VLANs (Virtual Local Area Networks). VLANs help in creating logical network partitions that can use different IP address ranges while sharing the same physical infrastructure.

  1. Creating VLAN Interfaces:

    • Go to Interfaces > VLANs in the RouterBoard interface.
    • Add a new VLAN interface and assign it to the parent interface (e.g., ether2).
    • Assign an IP address to the VLAN in IP > Addresses.
  2. Tagging VLANs on Switches:

    • Ensure that your switches are configured to recognize and pass VLAN-tagged traffic.
  3. Routing Between VLANs:

    • You can configure inter-VLAN routing by adding specific routes in the IP > Routes section or using firewall rules to manage traffic between VLANs.

5. Monitoring and Managing Traffic

Once the configuration is complete, it's essential to monitor network traffic to ensure everything is working smoothly. RouterBoard offers several tools for this:

  • Torch: Use the Torch tool to monitor traffic on individual interfaces.
  • Logs: Check logs in System > Logging to identify any issues or irregularities in traffic flow.
  • Traffic Graphs: You can also set up traffic graphs in Interface > Traffic to track data usage and performance in real time.

6. Security Considerations

When managing multiple IP addresses and subnets, it's crucial to implement robust security measures. Ensure that you:

  • Configure proper firewall rules to protect internal IP addresses.
  • Use port forwarding and address lists to control which devices or services are accessible from the outside.
  • Regularly update your RouterBoard firmware to patch any vulnerabilities.

Conclusion

Using multiple IP addresses on the same network through a RouterBoard can provide great flexibility and control over network resources. By carefully configuring the router with multiple IPs, NAT, and routing, you can optimize your network for hosting services, managing traffic, or segmenting devices. Whether you are a small business, network enthusiast, or IT professional, the combination of MikroTik's RouterBoard and the right configurations will help you unlock the full potential of your network infrastructure.

terça-feira, 16 de julho de 2024

How to Create a Virtual Machine Directly on an Android Device

How to Create a Virtual Machine Directly on an Android Device

To create a virtual machine directly on an Android device, you can use specific applications that allow the emulation of operating systems within Android. One of the most popular apps for this purpose is VMOS. Below are the steps to install and configure VMOS to create a virtual machine on Android:

Step 1: Install VMOS

Download VMOS

  • Access the official VMOS website or download the app directly from the Google Play Store.

Install the App

  • After downloading the APK file or installing directly from the Play Store, follow the on-screen instructions to complete the installation.

Step 2: Configure the Virtual Machine

Open VMOS

  • After installation, open the VMOS app.

Create a New Virtual Machine

  • The first time you open VMOS, you will see an option to "Add VM." Click on this option.

Choose the VM Configuration

  • VMOS offers different versions of Android for emulation. Choose the version you want to use.
  • Follow the on-screen instructions to download and install the chosen version.

Configure the VM

  • After installing the Android version, you can adjust settings such as screen resolution, allocated RAM, and other virtual hardware settings.
  • You can also enable "Root" if you need superuser permissions within the VM.

Step 3: Use the Virtual Machine

Start the Virtual Machine

  • Once configured, you can start the virtual machine within VMOS by clicking on the VM icon you created.

Interact with the VM

  • The virtual machine will function as an independent Android device. You can install apps, access the internet, and perform other activities as usual.

Step 4: Manage the Virtual Machine

Additional Settings

  • Within VMOS, you can access additional settings to manage the VM, such as performance adjustments and storage settings.

Backup and Restore

  • VMOS also offers options for backing up and restoring your VMs, allowing you to save and restore the state of the virtual machine as needed.

Final Considerations

  • Performance: The performance of the VMs can vary depending on the hardware of your Android device. More powerful devices will offer a smoother emulation experience.
  • Compatibility: Not all apps may work perfectly within the virtual machine, especially those that rely on specific hardware or special permissions.

Using VMOS, you can create and manage virtual machines directly on your Android device, providing a flexible environment for testing and using apps in a separate space.

 

How to Create a Free VPN in a Virtual Machine

How to Create a Free VPN in a Virtual Machine

Creating a free VPN in a virtual machine can be accomplished using various online tools and services. Here, we outline a straightforward process using OpenVPN, a popular open-source VPN solution.

Step 1: Set Up the Virtual Machine

Install the Operating System

  • Ensure you have a virtual machine configured and running with an operating system of your choice (e.g., Ubuntu).

Update the System

  • Before installing any software, it is good practice to update the operating system:
    sh
    sudo apt update && sudo apt upgrade -y

Step 2: Install OpenVPN

Install OpenVPN

  • In the terminal, install OpenVPN using the package manager:
    sh
    sudo apt install openvpn -y

Download the OpenVPN Installation Script

  • There is a popular script that automates the OpenVPN setup called openvpn-install. Download and execute the script:
    sh
    wget https://git.io/vpn -O openvpn-install.sh chmod +x openvpn-install.sh sudo ./openvpn-install.sh

Follow the Script Instructions

  • The script will ask several questions, such as the server's IP address, the port to use, the protocol (UDP or TCP), and the client's name. Provide the necessary answers.

Generate Client Configuration Files

  • Upon completion, the script will generate a .ovpn file for the client. This file contains all the necessary configurations to connect to the VPN server.

Step 3: Configure the VPN Client

Transfer the .ovpn File to the Client

  • Transfer the generated .ovpn file to the client device where you want to configure the VPN.

Install the OpenVPN Client on the Client Device

  • Linux:
    sh
    sudo apt install openvpn -y
  • Windows:
  • Mac:

Import the .ovpn File

  • Import the .ovpn file into the OpenVPN client.

Connect to the VPN

  • Start the VPN connection using the OpenVPN client.

Step 4: Test the Connection

Verify the IP

  • After connecting to the VPN, verify that your IP has changed to the VPN server's IP. You can check this on websites like WhatIsMyIP.com.

Test Connectivity

  • Ensure that you can access the internet and that your connections are being routed through the VPN.

Final Considerations

  • Security: Although OpenVPN is a robust solution, it is essential to ensure that your server is properly secured. Keep both the operating system and OpenVPN updated.
  • Performance: The VPN's performance will depend on the virtual machine's resources and internet connection speed.
  • Free Limitations: While OpenVPN itself is free, hosting costs and server resources (such as CPU, memory, bandwidth) are factors to consider.

By following these steps, you can set up a free VPN using OpenVPN in a virtual machine, providing an additional layer of security and privacy for your network connections.

 

How to Create a Virtual Machine in the Android Emulator

How to Create a Virtual Machine in the Android Emulator

Creating a virtual machine in the Android emulator is a straightforward process if you follow these steps:

Step 1: Install Android Studio

  1. Download and Install Android Studio:
    • Visit the official Android Studio website and download the installer.
    • Follow the installation instructions provided by the installer.

Step 2: Configure the Android SDK

  1. Open Android Studio:
    • Launch Android Studio on your computer.
  2. Navigate to SDK Settings:
    • Go to File > Settings (or Android Studio > Preferences on macOS).
    • Navigate to Appearance & Behavior > System Settings > Android SDK.
  3. Install SDK Platforms:
    • Select the SDK Platforms tab and install the desired Android platforms.
  4. Install SDK Tools:
    • Go to the SDK Tools tab and install the Android Emulator, Android SDK Build-Tools, and other necessary tools.

Step 3: Create a Virtual Device (AVD - Android Virtual Device)

  1. Open AVD Manager:
    • In Android Studio, go to Tools > AVD Manager.
  2. Create a New Virtual Device:
    • Click Create Virtual Device.
  3. Select a Device:
    • Choose a device from the list of predefined devices and click Next.
  4. Select a System Image:
    • Select a system image (Android version) you want to use and click Next.
  5. Configure AVD Options:
    • Configure the AVD options such as name, memory size, and other hardware settings.
  6. Finish Creation:
    • Click Finish to create the AVD.

Step 4: Run the Virtual Machine

  1. View Available AVDs:
    • In the AVD Manager, you will see the list of available AVDs.
  2. Start the Emulator:
    • Click the play icon (green triangle) next to the AVD you created to start the emulator.

Additional Tips

  • System Requirements:
    • Ensure that your computer meets the minimum system requirements to run the Android emulator.
  • Optimize AVD Settings:
    • Adjust the AVD settings to improve performance, such as allocating more RAM or enabling hardware acceleration (Intel HAXM for Intel processors or KVM for AMD processors).

By following these steps, you should be able to create and run a virtual machine in the Android emulator using Android Studio successfully.

 

quarta-feira, 26 de junho de 2024

Ancient Maps and Their Incredible Discrepancies with Modern Maps: A Journey into the Mysteries of Antarctica

Ancient Maps and Their Incredible Discrepancies with Modern Maps: A Journey into the Mysteries of Antarctica



We all know that there are levels of knowledge where the more you dig, the more you discover what was hidden beneath the surface, much like the tip of an iceberg. Most of the iceberg lies below the water's surface. Similarly, in the film "The Matrix," the question is posed: how deep does the rabbit hole go? Today's topic is ancient maps and their incredible discrepancies compared to modern maps. 



**The Mysteries of Antarctica**


Antarctica is a land of beautiful landscapes, natural ice walls, icebergs, possibly pyramids, and many other mysteries. The comparisons to the Ice Wall in the series "Game of Thrones," which separates the known world from the unknown, are striking. Today, we delve into what ancient maps say about Antarctica and the Arctic.


**Like and Subscribe**


If you enjoy this topic, be sure to like the video, subscribe to the channel, and join me as I reveal how deep the rabbit hole goes. 


**The Mercator Map**


Many have seen this map created by Gerardus Mercator, a cartographer depicted with a compass in hand. The Mercator projection, a famous map projection, is named after him. This map is well-known for its unusual depiction of the North Pole. In the Mercator map, America is shown in pink, Asia in yellow, with Iceland and Greenland prominently marked.


**The Enigmatic Four Lands**


At the center of the map, we see four lands surrounding a central mountain. Comparing Mercator's North Pole to the modern official North Pole, we notice that the lands Mercator depicted have disappeared. Did Mercator add these features for aesthetic reasons, or was there something more? 


**The Southern Hemisphere and the Great Discrepancy**


Looking at the Mercator atlas of 1595, we see "Terra Australis," meaning the land of the south in Latin. This map shows a certain harmony with current maps, except for a bulge west of South America. The significant discrepancy, however, is the size. The area of South America is 17,840,000 km², while Antarctica is 14,200,000 km². Yet, in Mercator's map, Antarctica appears almost twice as large as South America.


**Comparing Sizes**


Let’s test this. Placing South America on Mercator's Antarctica, we find it takes nearly two South Americas to cover it. This suggests that Mercator's Antarctica is approximately six times larger than the modern-day measurement.


**The History of Antarctic Maps**


Official history and science offer explanations for these discrepancies. Mercator’s map, while intriguing, is not alone. Abraham Ortelius, another cartographer, depicted Antarctica similarly in his 1570 atlas. Ortelius' map shows a massive, verdant Antarctica, challenging our modern perceptions.


**Orthodoxy and Speculation**


Other cartographers like Petrus Plancius and Jodocus Hondius also depicted Antarctica similarly. The official narrative suggests that these depictions were speculative, based on limited exploration. As navigators discovered more, the space for the hypothetical "Terra Australis" shrank, leading to its eventual disappearance from maps by the 18th century.


**The Enigma of Piri Reis**


Another fascinating map is the Piri Reis map of 1513. It shows parts of South America, Africa, and possibly Antarctica, depicted without ice and with detailed coastlines. The map's accuracy, based on older charts, raises questions about the historical climate and geography of Antarctica.


**Modern Understanding and Ancient Insights**


The differences between ancient and modern maps of Antarctica suggest significant changes in our understanding of the continent. Were these ancient maps based on observations or speculation? Is it possible that Antarctica was once ice-free, or has its representation been altered over time?


**Conclusion**


The rabbit hole goes deep when exploring ancient maps and their incredible discrepancies with modern ones. These maps offer a glimpse into a world that might have been very different from what we know today. Whether due to changing climates, forgotten knowledge, or artistic interpretation, these maps challenge our perceptions and invite us to keep digging.


**Engage and Explore**


What do you think about these ancient maps? Were they based on observations or speculation? Leave your thoughts in the comments and join the discussion. If you're curious to see where this journey takes us, remember to like and subscribe for more explorations into the mysteries of the past.



Ancient maps hold fascinating mysteries that challenge our understanding of history and geography. The stories they tell, whether based on observation or imagination, continue to captivate and intrigue us.

Top 10 MMORPG Games for Android: Dive into Epic Adventures

 Top 10 MMORPG Games for Android: Dive into Epic Adventures



Mobile gaming has evolved dramatically, and MMORPGs (Massively Multiplayer Online Role-Playing Games) are among the most popular genres. These games offer expansive worlds, engaging storylines, and the chance to connect with players worldwide. Here’s a list of the top 10 MMORPGs for Android that you can download and start playing today.


---


**1. Black Desert Mobile**


Black Desert Mobile is renowned for its stunning graphics and deep gameplay. With a vast world to explore, various classes, and intricate combat mechanics, this game provides a rich MMORPG experience.


*Download Link: [Black Desert Mobile](https://play.google.com/store/apps/details?id=com.pearlabyss.blackdesertm)**


**2. Lineage 2: Revolution**


Lineage 2: Revolution brings the acclaimed PC MMORPG to mobile. It features large-scale, real-time, open-world combat, offering an immersive experience with high-quality graphics.


*Download Link: [Lineage 2: Revolution](https://play.google.com/store/apps/details?id=com.netmarble.lin2ws)**


**3. Ragnarok M: Eternal Love**


Ragnarok M: Eternal Love is a beloved classic brought to mobile. It stays true to the original with its charming art style and addictive gameplay while adding modern features to enhance the experience.


*Download Link: [Ragnarok M: Eternal Love](https://play.google.com/store/apps/details?id=com.gravity.romNAg)**


**4. AdventureQuest 3D**


AdventureQuest 3D offers a cross-platform MMORPG experience, allowing you to play on both mobile and PC. It features a humorous storyline, various classes, and real-time combat.


*Download Link: [AdventureQuest 3D](https://play.google.com/store/apps/details?id=com.battleon.aq3d)**


**5. Blade & Soul Revolution**


Blade & Soul Revolution brings martial arts and magic to your fingertips. It offers an engaging storyline, beautifully rendered graphics, and dynamic combat mechanics.


*Download Link: [Blade & Soul Revolution](https://play.google.com/store/apps/details?id=com.netmarble.bnsmasg)**


**6. Albion Online**


Albion Online is a sandbox MMORPG where player-driven economy and open-world PvP are key features. Its cross-platform support allows you to play seamlessly across devices.


*Download Link: [Albion Online](https://play.google.com/store/apps/details?id=com.sandboxinteractive.albiononline)**


**7. Toram Online**


Toram Online offers a customizable experience with no class restrictions. You can create a unique character, craft weapons, and explore a vast world with friends.


*Download Link: [Toram Online](https://play.google.com/store/apps/details?id=com.asobimo.toramonline)**


**8. Perfect World Mobile**


Perfect World Mobile brings the classic PC MMORPG to mobile devices with updated graphics and gameplay. It features a vast, seamless world, dynamic combat, and various classes.


*Download Link: [Perfect World Mobile](https://play.google.com/store/apps/details?id=com.pwrd.pwm)**


**9. Order & Chaos 2: Redemption**


Order & Chaos 2: Redemption is the sequel to one of the most popular mobile MMORPGs. It offers an expansive world, various races and classes, and a plethora of quests.


*Download Link: [Order & Chaos 2: Redemption](https://play.google.com/store/apps/details?id=com.gameloft.android.ANMP.GloftO2HM)**


**10. Talion**


Talion is known for its impressive character customization, large-scale PvP battles, and immersive world. It provides a rich and engaging MMORPG experience on mobile.


*Download Link: [Talion](https://play.google.com/store/apps/details?id=com.gamevil.talion.android.google.global.normal)**


---


**Conclusion**


These MMORPGs for Android offer endless adventures and the chance to connect with players from around the globe. Whether you're into epic battles, intricate storylines, or crafting and exploration, there's something for every MMORPG enthusiast. Download these games and embark on your epic journey today!


---



The first war criminal: Peter von Hagenbach

In the 20th century, we had many individuals convicted of war crimes, with some sentenced to death. However, the first recorded trial of this kind was in Europe during the Middle Ages, over 500 years ago, a topic covered in the Nerdologia podcast. Welcome to a new episode of "História Nerdologia." My name is Felipe Figir.


As a history columnist, podcaster, YouTuber, professor, and someone familiar with law, or if you watched Nerdologia's episode on the trial of Peter Von Hagenbach in August 2023, we discussed the history and establishment of the International Criminal Court, currently prominent in the news. It is the first permanent international tribunal for judging individuals for genocide, crimes against humanity, war crimes, and the crime of aggression.


In that video, we commented on how history, unfortunately marked by violence, has many well-documented events since antiquity characterized as massacres or similar terms, especially during wartime. This violence sparked moral and ethical debates condemning episodes of excessive or unnecessary violence and advocating for what should be appropriate or ethical conduct for a warrior.


From the Code of Hammurabi onward, topics like the treatment of prisoners, pillaging of cities, and the recognition of vulnerable groups such as the elderly and children have been present across various cultures throughout history. Although not codified as war crimes as they are today, such acts were prevalent in medieval Europe, integral to its portrayal in films, series, and games—perhaps even excessively compared to reality.


On May 9, 1469, in the region of Padre Calé, the Treaty of San Omer was signed. Duke Sigismund of Habsburg leased some of his lands in southern Alsace to Duke Charles of Burgundy for 50,000 florins, a currency containing gold. Sigismund aimed to form a defensive alliance with Charles to better defend his lands against the French and Swiss, also using the money to acquire land in the Alpine region of Tyrol.


The Duchy of Burgundy enjoyed significant autonomy and rivalled its more powerful neighbors, situated between the Kingdom of France and Germanic lands, sometimes aligning with one and sometimes with another. At various times, it even served as a vassal of France. Charles of Burgundy appointed a knight named Peter Von Hagenbach as his administrator of the leased lands, including a smaller territory in Alsace.


He organized a small army and set out to control the new territories, which turned into a disaster. Initially, local German-speaking people did not welcome a new ruler who spoke French and was a vassal of the Duke of Burgundy. Peter Von Hagenbach proved to be a cruel and violent administrator, increasing taxes, imposing recruitment of farmers, and his soldiers were abusive and violent towards villagers. He ordered roadblocks, tolls, and bribes from Swiss merchants passing through, even though they were not under his authority. Reports of abusive arrests surfaced.


When representatives from the village of Tan requested an audience to complain, they were executed without trial. According to accounts cited by the French historian Baron de Barante, Peter Von Hagenbach was prone to using sexual violence against women as a weapon, authorizing his soldiers to commit such crimes freely and committing such acts himself, including against a nun.


At the same time, Peter Von Hagenbach was trusted by the Duke of Burgundy, serving as an interpreter in official talks between the Duke and Emperor Frederick III of the Holy Roman Empire, discussing a potential marriage between their children. Peter Von Hagenbach's actions against Swiss merchants prompted closer ties between the Swiss Confederation and the Duke of Austria, who leased the lands, arguing that the tax increase violated the lease agreement.


Sigismund of Habsburg sought the return of his lands, but Charles of Burgundy refused. Simultaneously, some cities in the region rebelled against Peter Von Hagenbach. An anti-Burgundy league formed, including the Swiss, the Duke of Austria, and rebellious cities in Alsace, part of a larger war lasting several years—Burgundian Wars.


The league defeated Peter Von Hagenbach's soldiers, who took refuge in the city of Brisach. The city did not want him there, so he repeated his customary actions: massacring part of the inhabitants. His behavior was so tyrannical that his own soldiers mutinied and handed him over to the enemies.


The Duke of Austria decided to convene a jury of 28 representatives from the major cities forming the league to judge the knight. The trial began at 8 a.m. on May 9, 1474, in Saas. Peter Von Hagenbach's defense argued that the court had no authority, that the accusations of sexual violence were actually consensual encounters, and that his actions were merely obeying the orders of his lord, the Duke of Burgundy. According to the records, one of his representatives said that he recognized no judge or master other than the Duke of Burgundy, from whom he received his commission and orders. He had no right to question the orders he was tasked to execute, and it was his duty to obey.


By 4 p.m. that day, the jury found Peter Von Hagenbach guilty of murder, sexual violence, perjury, and pillaging. He symbolically lost his titles and was sentenced to death. Representatives from seven cities vied for the chance to be the executioner. The criminal asked for forgiveness for his crimes and for other even worse things, and was beheaded with an axe, according to Father Erhard Von Oppenweiler. 6,000 people were reportedly present.


Later, Peter Von Hagenbach's history of cruelty took on legendary proportions, with his mummified head displayed, and stories of his ghost haunting a forest. His widow ordered the construction of a chapel in his honor, demolished in the 16th century to build a fortress. In the 20th century, a play was written about him.


With the consolidation of scientific historical methodology, historians began to address other issues, considering that some of Peter Von Hagenbach's crimes may have been exaggerated to ensure his guilt not only for the crimes he committed but also to serve as a scapegoat to exonerate the Duke of Burgundy.


His trial was resurrected as a precedent during preparations for the trials of Nazi criminals in Nuremberg after World War II. Peter Von Hagenbach's defense that he was merely following orders was not accepted in his time, and in 1946, it became the fourth principle of Nuremberg: that a person cannot justify a crime by claiming they were just following orders; this effectively creates two guilty parties and does not absolve those involved.


Today, the Nuremberg principles are a crucial part of international law against war crimes and crimes against humanity. Peter Von Hagenbach is considered the first war criminal in the modern sense of the term. Remember, this video is a condensed version; unfortunately, many fascinating details had to be omitted. Sources and further suggestions are available in the description and comments of Nerdologia.

The Trial of Peter von Hagenbach: A Landmark in War Crimes Justice

**The Trial of Peter von Hagenbach: A Landmark in War Crimes Justice**


In the annals of history, the 15th century marked a significant turning point with the trial of Peter von Hagenbach, a momentous event often overshadowed by more recent legal precedents. Situated amid the tumultuous backdrop of medieval Europe, this trial stands as a seminal episode in the evolution of international law concerning war crimes.


Peter von Hagenbach, a knight appointed by Duke Charles of Burgundy, governed a region in Alsace with an iron fist during the mid-1400s. His administration was marked by brutal taxation, arbitrary imprisonment, and heinous acts of violence, including reported sexual assaults against women. These atrocities sparked local outrage and ultimately led to his trial in May 1474.


Convened in the town of Breisach, the trial was extraordinary for its time. It represented a stark departure from the prevailing norms where such acts of cruelty by feudal lords often went unpunished or were dealt with leniently. The proceedings, conducted by a jury composed of representatives from several cities in the region, charged Hagenbach with murder, rape, perjury, and pillaging.


The defense argued that Hagenbach was merely executing orders from his superior, Duke Charles, and therefore should not be held individually accountable—a defense eerily reminiscent of subsequent claims made during more modern war crime tribunals. However, the jury’s verdict was unequivocal: Hagenbach was found guilty on all counts and sentenced to death by decapitation.


The execution of Peter von Hagenbach resonated far beyond the borders of Alsace. It set a precedent that transcended the era, influencing legal doctrines centuries later, particularly during the Nuremberg Trials after World War II. The principle that individuals cannot evade responsibility for their actions by citing superior orders—a principle underscored in the Nuremberg Principles—was foreshadowed in Hagenbach’s trial.


In contemporary context, Hagenbach serves as a poignant reminder of the enduring struggle to uphold justice in times of conflict. His trial highlighted the evolving moral and ethical standards surrounding warfare, challenging the impunity often enjoyed by those in positions of power.


Today, the legacy of Peter von Hagenbach endures not only as a historical curiosity but as a foundational moment in the development of international humanitarian law. His trial represents a pivotal step towards holding individuals accountable for egregious acts committed during war—a principle that continues to shape legal frameworks aimed at preventing atrocities and protecting human rights worldwide.


As we reflect on this watershed moment in history, we are reminded that justice, though often belated and imperfect, remains a beacon of hope in the face of unchecked brutality.


sexta-feira, 7 de junho de 2024

Enhancing Android Emulator Performance by Disabling Hyper-V and Windows Sandbox

Enhancing Android Emulator Performance by Disabling Hyper-V and Windows Sandbox

As Android emulators become increasingly popular for developers and users alike, ensuring optimal performance is crucial. However, certain virtualization technologies, such as Hyper-V and Windows Sandbox, can conflict with Android emulators, leading to performance issues or even preventing them from starting. This article will guide you through the steps to disable these technologies, improving the performance of your Android emulator.

Understanding the Problem

Hyper-V and Windows Sandbox are powerful tools integrated into Windows 10 and Windows 11 (Pro, Enterprise, and Education editions). Hyper-V allows users to create and manage virtual machines, while Windows Sandbox provides a lightweight, isolated environment to run untrusted applications. However, these technologies can consume system resources and create conflicts with Android emulators like BlueStacks, NoxPlayer, and others.

System Requirements

Before proceeding, ensure your system meets the following requirements:

  • Operating System: Windows 10 Pro, Enterprise, or Education; Windows 11 Pro, Enterprise, or Education.
  • Virtualization: Must be enabled in BIOS/UEFI.
  • Memory: At least 4 GB of RAM (8 GB recommended).
  • Disk Space: At least 1 GB of free disk space.
  • CPU Cores: 2 CPU cores (4 cores with hyperthreading recommended).

Steps to Disable Hyper-V and Windows Sandbox

  1. Open Windows Features

    • Press Windows + R to open the Run dialog.
    • Type optionalfeatures and press Enter to open the Windows Features dialog.
  2. Disable Hyper-V

    • In the Windows Features list, locate Hyper-V.
    • Uncheck the box next to Hyper-V to disable it.
  3. Disable Windows Sandbox

    • Scroll down in the Windows Features list to find Windows Sandbox.
    • Uncheck the box next to Windows Sandbox to disable it.
  4. Apply Changes

    • Click OK to apply the changes. Windows will process the disabling of these features.
    • Once the process is complete, you will be prompted to restart your computer. Click Restart now for the changes to take effect.

Verifying Hyper-V and Windows Sandbox are Disabled

After restarting your computer, follow these steps to confirm that Hyper-V and Windows Sandbox have been disabled correctly:

  1. Check Hyper-V

    • Open PowerShell with administrative privileges (search for "PowerShell" in the Start menu, right-click, and select "Run as administrator").
    • Type the following command and press Enter:
      powershell
      Get-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-All
    • The status should indicate that the feature is disabled.
  2. Check Windows Sandbox

    • Similarly, in PowerShell, type:
      powershell
      Get-WindowsOptionalFeature -Online -FeatureName "Containers-DisposableClientVM"
    • The status should indicate that the feature is disabled.

Disabling Virtualization in BIOS/UEFI

If you need to disable virtualization at the BIOS/UEFI level, follow these steps:

  1. Restart and Access BIOS/UEFI

    • Restart your computer and press the appropriate key (such as F2, F10, DEL, or ESC) to enter BIOS/UEFI during startup.
  2. Disable Virtualization

    • In the settings menu, look for an option related to virtualization, such as "Intel VT-x", "AMD-V", or "Virtualization Technology".
    • Disable this option.
    • Save the changes and exit BIOS/UEFI.

Conclusion

By following these steps, you can disable Hyper-V and Windows Sandbox, freeing up system resources and enhancing the performance of Android emulators on your computer. This will allow you to use emulators like BlueStacks, NoxPlayer, and others without compatibility issues related to these virtualization technologies. Whether you're a developer testing applications or a user enjoying mobile games on your PC, ensuring these settings are configured correctly can make a significant difference in your emulator's performance.