UFW

To ensure UFW (Uncomplicated Firewall) starts automatically on Linux when the server boots, follow these steps:

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✅ 1. Enable UFW service at startup

Use systemctl to enable the ufw systemd service:

sudo systemctl enable ufw

This creates a symlink so that the UFW service starts automatically on boot.

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✅ 2. Start UFW now (if not already started)

sudo ufw enable

If already enabled, you can check the status:

sudo ufw status verbose

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✅ 3. Verify it’s enabled at boot

After a reboot, check:

sudo systemctl status ufw

You should see something like:

Active: active (exited)

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✅ 4. Optional: Check UFW is loaded in default runlevels (SysVinit)

If your system uses SysVinit instead of systemd:

sudo ufw status
sudo ufw enable
sudo update-rc.d ufw enable

But this is rarely needed on modern systems.

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