Fernando - Root Fan - Page 29 of 30

Commands to Troubleshoot Ubuntu UFW

I was having problems with ufw not allowing me to add a new rule.

# ufw deny from 54.38.157.178 to any
ERROR: initcaps
[Errno 2] iptables: Chain already exists.

So this is what I did:

First of all, you need to get a certificate for your Ubuntu server.

I am using Apache as my webserver.

We’re going to use the free certificate provider letsencrypt.

I recommend that you install the packages from the PPA because they are more up to date.