Puppet UFW Module
Module for configuring UFW (Uncomplicated Firewall).
Tested on Debian GNU/Linux 6.0 Squeeze and Ubuntu 12.04 LTS with Puppet 2.7.
Patches for other operating systems are welcome.
Usage
If you include the ufw class the package will be installed, the service
will be enabled, and all incomming connections will be denied:
include ufw
Note that you’ll need to define a global search path for the exec
resource to make this module function properly. This should ideally be
placed in manifests/site.pp:
Exec {
path => "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
}
You can then allow certain connections:
ufw::allow { "allow-ssh-from-all":
port => 22,
}
ufw::allow { "allow-all-from-trusted":
from => "10.0.0.145",
}
ufw::allow { "allow-http-on-specific-interface":
port => 80,
ip => "10.0.0.20",
}
ufw::allow { "allow-dns-over-udp":
port => 53,
proto => "udp",
}
You can also rate limit certain ports (the IP is blocked if it initiates
6 or more connections within 30 seconds):
ufw::limit { 22: }
You can also adjust the ufw logging settings
ufw::logging { "prevent-logging":
level => 'off',
}
