VPS Hosting General

What is a VPS firewall and how do I configure UFW?

A VPS firewall controls which network connections are allowed to and from your server. Without a firewall, every port on your server is exposed to the internet — attackers scan for open ports and exploit vulnerable services. UFW (Uncomplicated Firewall) is the standard Ubuntu firewall tool. Basic setup on Connect Quest VPS: ufw default deny incoming, ufw default allow outgoing, ufw allow 22 (SSH — do this FIRST or you lock yourself out), ufw allow 80, ufw allow 443, ufw enable. For non-standard SSH port (security): ufw allow 2222/tcp then update /etc/ssh/sshd_config Port 2222. For MySQL (only from app server): ufw allow from 10.0.1.10 to any port 3306. Check status: ufw status verbose. Always add SSH rule before enabling UFW. Configure server security on all Connect Quest VPS at connectquest.co.in.

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