How do you block or secure (SSL) the IP address used when accessing Webmin/Virtualmin? For example when I first installed Webmin it went to https://123.356.7.89:10000 but the browser shows this as an insecure site.
I've gotten the SSL cert to work on my other domains using Let's Encrypt. I know that Let's Encrypt doesnt protect IP addresses but is there a legitimate way to secure webmin when accessing it (a different setting or another free alternative to Lets Encrypt for example)? I have googled this extensively to no clear solution.
If the IP address cant be covered by an SSL cert is there a way to redirect or block login to virtualmin using my IP addresses (more than one)?