I tried to connected to webmin on my VPS today and got the error :
Firefox can’t establish a connection to the server at 100.100.100.100:10000.
(where 100.100.100.100 is the IP of your VPS)
What is wrong?
This means webmin has crashed and is a warning sign that you are likely using more memory than your VPS has installed. On VPS’s with low memory, webmin seems to be one of the first things to lock up.
You can restart it by ssh’ing to the server and typing:
/sbin/service restart webmin
You could also reboot the entire VPS in your control panel as last resort if you do not have ssh access from your current location.
If you would like to purchase more memory contact support. Memory upgrades are quick and do not require any downtime to your VPS>