Firewall

Firewall Configuration

Please follow this step-by-step guide, to configure the firewall

Gain access to root shell
```
sudo -i
```
Before enabling firewall, make sure to provide access to the ssh port
```
ufw allow ssh
```
Make sure to allow outgoing connections
```
ufw default allow outgoing
```
Block all incoming connection except ssh by default
```
ufw default deny incoming
```
Due to security concerns, close port 22 in the ufw firewall
```
sudo ufw delete allow 22/tcp
```
Turn on the firewall
```
ufw enable
```
It might show a prompt like this:
```
Command may disrupt existing ssh connections. Proceed with operation (y|n)?
```
Type "y" and enter to confirm the operation
Reload the firewall
```
sudo ufw reload
```