I installed ISPConfig3 using the automated installation as described in this tutorial (https://www.howtoforge.com/tutorial/ispconfig-3-automated-installation-on-ubuntu-1804/) Before installation i only Installed 2GB of swapfiles Ran apt update && apt upgrade VM is currently running on ubuntu 18.04 LTS After automatic installation completed i received a link to the ipsconfig control panel and some login information. When I tried to connect using the provided link, the browser displayed a "ERR_CONNECTION_TIMED_OUT" error message. I also tried https:/[MY External IP]:8080 but it won't work either. I can still access apache sample page and PHPMyAdmin using http:/[My External Ip]/ and http:/[My External Ip]/phpmyadmin
You currently have to run the automatic install in interactive mode as not all variables for 3.2 and above are included yet. This might explain the error.
I think he was using and referring to non-official ISPConfig installer, not the official one which currently is advisable to be used in an interactive mode. For that he need to ask support from the that script thread or its github. To use official ISPConfig installer, read: https://www.howtoforge.com/community/threads/ispconfig-and-perfect-server-howto-autoinstaller.82563/