Linux Administration Cookbook

ufw

Prior to working with ufw in the previous section, we had to add this allow rule to let SSH traffic in, once the firewall was enabled:

vagrant@ubuntu1:~$ sudo ufw allow ssh/tcpRule addedRule added (v6)

The default ufw profile has incoming connections denied, as we can see in the following code:

vagrant@ubuntu1:~$ sudo ufw status verboseStatus: activeLogging: on (low)Default: deny (incoming), allow (outgoing), disabled (routed)New profiles: skip

Because of this, if we wanted to access a web server hosted on our Ubuntu box, we'd need a new rule.

Previously, we used the service name (ssh), so this time we're going to specifically allow a port (80, the default HTTP port) from our VirtualBox network:

vagrant@ubuntu1:~$ sudo ufw allow from ...