Port 8888 (Jupyter) — What It Is and How to Use It

Port 8888 is commonly associated with Jupyter Notebook and JupyterLab, providing a web-based interactive computing environment. It's crucial for data scientists, researchers, and developers who use Python and other languages for data analysis, machine learning, and scientific computing.

Last updated: 2026-06-11

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                Port Number
                8888
            

Protocol Jupyter

Common Use Cases

Running Jupyter Notebooks for interactive data analysis and visualization.
Hosting JupyterLab instances for a more integrated development environment.
Serving web applications or development servers during local development.
Providing a remote access point for collaborative data science projects.

Interactive Command Builder

Target Host / IP

Operating System

Generated Command

nc -zv example.com 8888

Check if Port 8888 is Open

sudo lsof -i :8888

netstat -ano | findstr :8888

⚠️ Security Note: Leaving port 8888 open to the internet without proper authentication and encryption can expose your Jupyter environment and potentially sensitive data to unauthorized access. Always secure your Jupyter instance with passwords, tokens, and consider using SSH tunneling or VPNs for remote access.

Related Ports

Frequently Asked Questions

Is port 8888 dangerous to leave open?

Yes, if left open to the internet without proper security measures (like password protection, token authentication, or SSH tunneling), it can be dangerous. An attacker could gain access to your Jupyter environment, execute arbitrary code, and access your files.

What service uses port 8888?

The primary service that uses port 8888 is Jupyter Notebook and JupyterLab. However, it's also a common port for various development servers or web applications that don't require root privileges.