Linux systems engineer with 8+ years running production web infrastructure. John writes hands-on tutorials about server administration, Nginx, Docker and everything that keeps a VPS healthy — every guide is tested on a live server before it's published.
183 posts
What you will read?1 Step 1: Set a Temporary Proxy2 Step 2: Configure Proxy for a Single User3 Step 3: Set a System-wide Proxy4 Step 4: Configure Proxy for APT5 Step 5: Set Proxy for Snap Setting a proxy on Ubuntu 25.04 via command line is useful for controlling internet access and routing traffic. Step…
What you will read?1 Step 1: Connect to Your Server via SSH2 Step 2: Open the SSH Configuration File3 Step 3: Change the SSH Port Number4 Step 4: Allow the New Port in Your Firewall5 Step 5: Restart the SSH Service6 Step 6: Test the New SSH Port Changing the default SSH port can help…
What you will read?1 Step 1: Pick a New SSH Port2 Step 2: Open the New Port in Firewall3 Step 3: Edit SSH Config File4 Step 4: Restart SSH Service5 Step 5: Test SSH on the New Port By default, SSH runs on port 22. Changing it helps avoid automated scans and basic attacks. Step…
What you will read?1 Step 1: Pick a New Port2 Step 2: Allow the New Port in Firewall3 Step 3: Update SSH Configuration4 Step 4: Restart SSH Service5 Step 5: Test the New SSH Connection Changing the default SSH port from 22 to a custom one is a simple security measure that helps reduce unwanted…
What you will read?1 Step 1: Choose and open a new port2 Step 2: Edit the SSH configuration3 Step 3: Restart SSH service4 Step 4: Test the new SSH port5 Step 5: Close the default SSH port SSH is one of the most used services on any Linux server, but leaving it on the default…
What you will read?1 Step 1: Install required dependencies2 Step 2: Install V2Ray using official script3 Step 3: Enable and start the service4 Step 4: Configure the V2Ray client5 Step 5: Restart to apply config V2Ray is a powerful proxy tool that supports protocols like VMess and VLESS. On Ubuntu 25.04, you can set up…
What you will read?1 Step 1: Create a limited user2 Step 2: Revoke admin rights3 Step 3: Limit access to your files4 Step 4: Assign a login shell5 Step 5: Clean up the guest’s files optional6 Optional Step: Disable GUI login Ubuntu 25.04 doesn’t offer built-in guest sessions by default, but you can still create…
What you will read?1 Step 1: Update your system2 Step 2: Install curl (if not installed)3 Step 3: Run the official V2Ray installation script4 Step 4: Start and enable V2Ray service5 Step 5: Edit the V2Ray configuration6 Optional Step: Check V2Ray logs V2Ray is a powerful open-source platform for building secure internet proxy services. It’s…
What you will read?1 Step 1: Boot into recovery mode2 Step 2: Fix broken packages3 Step 3: Reinstall the desktop4 Step 4: Repair bootloader from live USB5 Step 5: Reconfigure system packages6 Optional Step: Clean up old files When Ubuntu 25.04 breaks or fails to boot, you can often fix it without reinstalling or losing…
