Upgrade Warnings
- Moved from
certbot-auto
tocertbot
. Runapt install certbot
. - Stop auto-updating repository as it may cause breakage. Remove
git pull bubbly
from cron.
Improvement
- Change SSL Ticket Key size from 48 to 80.
- Change Diffie-Hellman Parameters Key size from 4096 to 3072.
- Change RSA Key size from 4096 to 3072.