Add Rate Limiting to UFW config

[Linicks]

Chris,
I've had good luck adding rate limiting rules to UFW. In addition to other measure, it's helped me stabilize my network and improve security. This may be a helpful addition to the guide. Here are some examples:

$sudo ufw limit 3000/tcp comment 'Jormungandr'

$sudo ufw limit ssh/tcp

A few more: https://www.cyberciti.biz/faq/howto-limiting-ssh-connections-with-ufw-on-ubuntu-debian/

Cheers!
--Nick, TTNK

[Chris-Graffagnino]

I rate-limit ssh, although I could see how it might help stabilize connections overall. I'll take a look!