I'm in no way a sysadmin, so bear with me a little.
I have a cloud server running Centos 5. I have Virtualmin/Webmin with a handful of sites running without issue. I also have CSF installed to stop persistent bot attacks.
I can access all my sites HTTP and HTTPS (without SSL) and they work fine.
When I attempt to access my Webmin's web interface
My browser hangs, eventually times out. I can no longer access any of my sites due to CSF adding my IP to the temp disallow list, here's the log entry:
*Port Scan* detected from 213.86.xxx.xxx (GB/United Kingdom/-). 16 hits in the last 187 seconds - *Blocked in csf* for 3600 secs
Once I unblock my IP and add it to the temp allow list, I can access the web UI login page.
Any ideas why the initial request is being disallowed?