I have a Let's Encrypt certificate on one of my servers. It is supposed to auto-renew, however, this does not work, as it says Port 80 is blocked on our Firewall. What is the best process for unblocking Port 80? I am a novice to ASDM. Thank you for any help you can provide.
Hi, The ACL applied to your inside interface is permitting all ip traffic, which would obviously include port 80. If you connect to the internet from the server directly does it work? That would confirm that the server does have access and the issue may lie elsewhere.
Are you able to run packet-tracer (ideally from the CLI) to simulate the traffic on port 80, provide the output for review.