I followed this tutorial https://www.howtoforge.com/tutorial/server-monitoring-with-munin-and-monit-on-ubuntu-14-04/2/ (for Monit only) exactly. I can access the Monit page outside ISPConfig at https://server1.example.com:2812/, but inside ISPConfig the iframe that should contain Monit is blank. I have filled in the System > Server Config fields for Monit correctly. The iframe html is: <iframe src="https://username: firstname.lastname@example.org:2812/" width="100%" height="1000" frameborder="0" style="overflow:visible;" kwframeid="4"></iframe> I have added a space before 'password' to prevent [colon]p becoming ! I have tried this in Chrome, Firefox and Internet Explorer, with the same result in each. Any suggestions?