How to allow only your IP to access your entire server Using UFW
How to allow only your IP to access your entire server Using UFW (firewall – easiest and fastest for Ubuntu/Debian)
If you don’t have UFW installed yet:
sudo apt install ufw
Reset all firewall rules (optional but clean):
sudo ufw reset
Set default rules to block everything:
sudo ufw default deny incoming sudo ufw default allow outgoing
Allow your IP ONLY:
sudo ufw allow from YOUR_IP_ADDRESS
Allow SSH (for you only) (assuming you connect via SSH on port 22):
sudo ufw allow from YOUR_IP_ADDRESS to any port 22 proto tcp
Enable the firewall
sudo ufw enable
Disable the firewall
sudo ufw disable
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