You want to expose your laptop’s localhost (like a web app running on http://127.0.0.1:3000 or http://localhost:8000) to the internet using Cloudflare, right?

The easiest and most secure way is using Cloudflare Tunnel (Cloudflared).

🔹 Steps to expose localhost with Cloudflare

Install Cloudflared

On Linux/macOS:


curl -L https://github.com/cloudflare/cloudflared/releases/latest/download/cloudflared-linux-amd64.deb -o cloudflared.deb
sudo dpkg -i cloudflared.deb

On Windows:
Download from Cloudflared GitHub releases and install.

Login to Cloudflare
```
cloudflared tunnel login
```
This opens a browser, asks you to log in to your Cloudflare account, and select a domain you own.

Create a Tunnel


cloudflared tunnel create my-tunnel

cloudflared tunnel --url http://localhost:8000

cloudflared tunnel --url https://localhost:10000/ --no-tls-verify

Configure Tunnel to expose localhost

Example: expose http://localhost:8000
Create a config file:


tunnel: my-tunnel
credentials-file: /home/user/.cloudflared/my-tunnel.json

ingress:
  - hostname: app.yourdomain.com
    service: http://localhost:8000
  - service: http_status:404

Route traffic
Point your Cloudflare DNS hostname (app.yourdomain.com) to the tunnel:
```
cloudflared tunnel route dns my-tunnel app.yourdomain.com
```
Run the Tunnel
```
cloudflared tunnel run my-tunnel
```

Now your localhost app is available on the internet at
👉 https://app.yourdomain.com

🔹 If you don’t own a domain

Cloudflare Tunnel can still give you a random .trycloudflare.com URL:


cloudflared tunnel --url http://localhost:8000

It will output something like:


https://random-subdomain.trycloudflare.com

Share that link and people can access your local app.

If you start with the random .trycloudflare.com URL now, you can later switch to your own domain without problems.

Here’s how it works:

Random mode (cloudflared tunnel --url http://localhost:8000)
- No domain required.
- You instantly get a temporary link like https://xyz123.trycloudflare.com.
- Great for testing or quick sharing.
- The link changes every time you restart.
Domain mode (with your Cloudflare-managed domain)

Permanent link like https://app.yourdomain.com.
Requires creating a named tunnel + DNS record.
You can later “upgrade” your setup by creating a tunnel and pointing it to your domain, without changing your app.

Suppose you want:

main.sumanadhikary.com.np → your local website on port 80
blog.sumanadhikary.com.np → your local app on port 8080
test.sumanadhikary.com.np → your local service on port 10000

🔹 Config file (`~/.cloudflared/config.yml`)


tunnel: my-tunnel
credentials-file: /home/your-username/.cloudflared/my-tunnel.json

ingress:
  - hostname: main.sumanadhikary.com.np
    service: http://localhost:80
  - hostname: blog.sumanadhikary.com.np
    service: http://localhost:8080
  - hostname: test.sumanadhikary.com.np
    service: http://localhost:10000
  - service: http_status:404

🔹 Steps

Login once (to get cert.pem):
```
cloudflared tunnel login
```
Create a tunnel:
```
cloudflared tunnel create my-tunnel
```

Add DNS records (in Cloudflare dashboard or via command):


cloudflared tunnel route dns my-tunnel main.sumanadhikary.com.np
cloudflared tunnel route dns my-tunnel blog.sumanadhikary.com.np
cloudflared tunnel route dns my-tunnel test.sumanadhikary.com.np

(This automatically creates CNAME records pointing to your tunnel.)

Run the tunnel:
```
cloudflared tunnel run my-tunnel
```

✅ Now:

https://main.sumanadhikary.com.np → localhost:80
https://blog.sumanadhikary.com.np → localhost:8080
https://test.sumanadhikary.com.np → localhost:10000

the software just uses the IP 192.168.19.15, and you don’t know which port it’s running on. That’s common with proprietary intranet apps. No problem — here’s how you can find it:

Step 1: Check if it’s a browser-based app

On your office laptop, open a browser and type:
```
http://192.168.19.15
```
or
```
https://192.168.19.15
```
If it loads, the port is default:
- http → port 80
- https → port 443

Step 2: Scan the server for open ports

If it doesn’t load in a browser:

Option A: On office laptop (Windows)

Open CMD as Administrator
Run:


netstat -a -n | findstr 192.168.19.15

This lists all ports the software/server is listening on.
Look for LISTENING entries on that IP.

Option B: On office laptop (Linux)


sudo netstat -tulpn | grep 192.168.19.15

Shows which ports are active and which program uses them.

Step 3: Test the port

Once you find a port (e.g., 5000):


cloudflared tunnel --url http://192.168.19.15:5000

Cloudflare will give you a public URL.
Open that URL from home to access the intranet software fast, no AnyDesk lag.

For windows

Here’s a step-by-step guide to install and use it:

🔹 1. Download Cloudflared for Windows

Go to the official release page: Cloudflared GitHub Releases.
Download the latest cloudflared-windows-amd64.exe (if your system is 64-bit).
Rename it to cloudflared.exe for convenience.
Move it to a folder like:
- C:\Program Files\cloudflared\
- or add it directly into a folder already in your PATH (like C:\Windows\System32).

🔹 2. Add to PATH (optional but recommended)

Press Win + R → type sysdm.cpl → Enter.
Go to Advanced → Environment Variables.
Under System variables, find Path → Edit → Add new entry:
```
C:\Program Files\cloudflared\
```
Click OK → OK.

Now you can run cloudflared from any terminal (PowerShell or Command Prompt).

🔹 3. Basic Commands

Check installation:
```
cloudflared --version
```
Run a tunnel to a local web server (example on port 80):
```
cloudflared tunnel --url http://localhost:80
```
→ This gives you a temporary Cloudflare URL to access your local server.
Login to Cloudflare (for persistent tunnels):
```
cloudflared tunnel login
```
→ This opens your browser to authenticate with your Cloudflare account.
Create a named tunnel:
```
cloudflared tunnel create my-tunnel
```

Route a domain (requires Cloudflare-managed domain):


cloudflared tunnel route dns my-tunnel sub.example.com

Run tunnel (persistent):
```
cloudflared tunnel run my-tunnel
```

🔹 4. Run as a Service (Windows)

To make the tunnel always run in background:


cloudflared service install

This installs it as a Windows Service.

if you already own your domain (and it’s managed through Cloudflare DNS), then you can make cloudflared serve your site securely under your own domain instead of the temporary trycloudflare.com links.

Here’s how you’d do it:

🔹 1. Prerequisites

Your domain must be added to Cloudflare (via their dashboard).
DNS must be managed by Cloudflare (nameservers pointing to Cloudflare).
cloudflared installed on Windows (as I showed earlier).

🔹 2. Authenticate `cloudflared`

Run:


cloudflared tunnel login

A browser window will open → login with your Cloudflare account.
Select the domain you want to use.
A certificate will be downloaded to C:\Users\<You>\.cloudflared\.

🔹 3. Create a Tunnel


cloudflared tunnel create my-tunnel

This creates a new tunnel ID.
Config file and credentials will be stored under
C:\Users\<You>\.cloudflared\.

🔹 4. Configure Tunnel (config.yml)

Make a file at:


C:\Users\<You>\.cloudflared\config.yml

Example:


tunnel: my-tunnel
credentials-file: C:\Users\<You>\.cloudflared\my-tunnel.json

ingress:
  - hostname: app.yourdomain.com
    service: http://localhost:8080
  - service: http_status:404

👉 Replace:

app.yourdomain.com with your real subdomain.
http://localhost:8080 with whatever service/port you’re running.

🔹 5. Connect Domain to Tunnel