Comment on Trouble setting Let's Encrypt certificates for Pangolin
3dcadmin@lemmy.relayeasy.com 3 weeks agofor future reference there are a few ports that need to be open for let’s encrypt to work, and it has a very small timeout (as you have found) so if the dns isn’t great it fails. Cloudflare will cache your site/dns so usually works
non_burglar@lemmy.world 2 weeks ago
Its just port 80. And letsencrypt provides a CIDR block so us paranoids who still restrict with firewalls can limit the exposure.