Do you mean modifying /etc/apache2/sites-available/ispconfig.vhost ? Sorry, I ask to confirm the issue, to know the proper way to avoid problems with updates and so on. Thanks!
I think that is not what was meant. Use Internet Search engines with Code: create a custom ISPConfig vhost template instead to find articles about this. Or better yet: Code: site:howtoforge.com create a custom ISPConfig vhost template instead
The easiest way is that you do what's described in the link in post #6, here is the link again: https://forum.howtoforge.com/thread...e-at-subdomain-on-port-443.75712/#post-356870 So you create a website in ISPConfig and paste the proxy config into the Apache directives field. No config file editing needed. Another way is to modify the ispconfig.vhost. It's the file /etc/apache2/sites-available/ispconfig.vhost. You must set a domain name and change the port. To make things update safe, copy the file install/tpl/apache_ispconfig.vhost.master from ISPConfig tar.gz file to the folder /usr/local/ispconfig/server/conf-custom/install/ and modify it in the same way.