Pretty new to the whole online security game and edging my way towards production. I'm keen to understand the _precise_ role ufw plays. You read that it is just a "front end" to iptables. So netfilter/ iptables are always running _anyway_ with or without ufw? And does a call to "ufw disable" turn off netfilter??
I ask because I have webmin installed, which offers me a perfectly comprehensible UI for adding rules to iptables. By adding rules in webmin and checking the 'Activate at Boot' option, then rebooting, am I actually securing my system, or do I have to run ufw enable to have a running firewall?
Noob question I know but it's sort of big deal to get this right (especially since I've had thousands of unauthorized access attempts to Dovecot over the last few days.)
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