Configure Firewall to Ubuntu FTP Server
Configure Firewall to Ubuntu FTP Server
If you haven’t already done so, it is recommended that you enable the ufw firewall for Ubuntu 18.04 / 19.10. Before enabling ufw firewall, make sure you add a rule for SSH, otherwise you may get locked out of your server if you’re connected remotely. If you don’t want to set up a firewall, skip to Step 3.
sudo ufw allow OpenSSHLet’s open ports 20 and 21 for FTP, and ports 40000-50000 for passive FTP. We’ll also open port 990 for TLS, which we will set up later.
sudo ufw allow 20/tcp
sudo ufw allow 21/tcp
sudo ufw allow 40000:50000/tcp
sudo ufw allow 990/tcpNow, enable the firewall if it isn’t already. Press y and ENTER if warned about disrupting the SSH connection.
sudo ufw enableTo check the status of the firewall, run:
sudo ufw statusIf the firewall is running, you should see Status: active and the firewall rules we just added.
Status: active
To Action From
-- ------ ----
OpenSSH ALLOW Anywhere
Apache Full ALLOW Anywhere
3306 ALLOW Anywhere
20/tcp ALLOW Anywhere
21/tcp ALLOW Anywhere
40000:50000/tcp ALLOW Anywhere
990/tcp ALLOW Anywhere
OpenSSH (v6) ALLOW Anywhere (v6)
Apache Full (v6) ALLOW Anywhere (v6)
3306 (v6) ALLOW Anywhere (v6)
20/tcp (v6) ALLOW Anywhere (v6)
21/tcp (v6) ALLOW Anywhere (v6)
40000:50000/tcp (v6) ALLOW Anywhere (v6)
990/tcp (v6) ALLOW Anywhere (v6)
