UFW gets inactive on restart of container

simos · August 14, 2019, 11:45am

Hi!

UFW runs fine here. Whenever the container is restarted, the UFW rules are applied automatically.
To make sense whether it works or not, we should have a common test.
Here it is,

Launch a new container,
```
lxc launch ubuntu:18.04 ufw
```
Get a shell into the container and install a Web server.
```
sudo apt update
sudo apt install -y nginx
logout
```

Test that the Web server is accessible from the host.

$ curl http://10.10.10.100/

<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
    body {

Get back into the container and enable UFW.

$ sudo ufw enable
Firewall is active and enabled on system startup

Then, try to access the web server from the host.

$ curl http://10.10.10.100/

(does not connect!)

Restart the container and try to access again.

$ lxc restart ufw
$ curl http://10.10.10.100/

(does not connect!)