Web Application Firewall (WAF) is a security tool that operates at the application layer, designed to protect web requests and responses from common attacks. A good WAF can shield your web apps from threats like SQL injection, cross-site scripting (XSS), and other vulnerabilities. It can also monitor and block traffic that might lead to Denial of Service (DoS) attacks.

SafeLine: A Free and Robust WAF Solution

Today, let’s dive into SafeLine, a powerful and free open-source WAF. It’s built on Nginx’s highly stable engine, offering excellent performance and reliability for handling web traffic security.

Installation

You can easily install SafeLine using a command-line script:

bash -c "$(curl -fsSLk https://waf.chaitin.com/release/latest/setup.sh)"

Access and Setup

After installation, make sure to open the necessary firewall port to access the WAF dashboard on port 9443. Use the following commands:

# Open port 9443 for SafeLine
firewall-cmd --zone=public --add-port=9443/tcp --permanent   
# Apply the changes immediately
firewall-cmd --reload   

Once the firewall is configured, you can access SafeLine at:

https://<your-server-ip>:9443/

Just bind your server's IP address, and you’re good to go!

Website: https://waf.chaitin.com/
GitHub: https://github.com/chaitin/SafeLine
Discord: https://discord.gg/3aRJ4qfwjA