How to remove host's LE cert and release port 80?

[moxfan]

Hi,

Made a silly mistake on my single public-IP machine when I ignored the requirements for installing a Let's Encrypt certificate on the host.

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There are a few prerequisites to use Let’s Encrypt:
1. Port 80 of the node needs to be reachable from the internet.
2. There must be no other listener on port 80.
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I need my port 80 back so I can forward it to an LXC container.

How do I remove the LE certificate AND release port 80?

Norman

 

[oguz]

How did you install the LE certificate? If with certbot it should be easy to remove:

certbot delete

 

[moxfan]

How did you install the LE certificate? If with certbot it should be easy to remove:

certbot delete

Hi Oguz

I used the installation notes at https://pve.proxmox.com/wiki/Certificate_Management.

I have now deregistered my LE account and deleted the LE host certficate from the GUI.

But port 80 is still taken up / used by the host, which was a condition of installing LE (pls. see my original post). How can I now release port 80 so that it becomes available for IP forwarding to a webserver in an LXC container.

Norman

 

[oguz]

But port 80 is still taken up / used by the host, which was a condition of installing LE (pls. see my original post). How can I now release port 80 so that it becomes available for IP forwarding to a webserver in an LXC container.

What is running on port 80?

Try checking the output of

netstat -antlp

and the running processes.