Will check. I didn't reboot as running as a service and when I change the settings it does seem to take effect. I used to have to logon but after changing I didn't. When I changed back to all connections I then had to logon again. I have cleared cache on the viewing computer. I also tried on firefox on my phone and same results.
Looking further into it though that didn't stop it.
Reading the help file, as I should have done already, I came across this;
Note however that if you are using Stunnel, all connections may appear to be coming locally
from the LAN as Stunnel is actually receiving the remote connections and forwarding these
to Blue Iris.
As I am running Stunnel this is what is causing it.
So don't run 'Non-Lan only' with Stunnel as anyone will have access to your cameras, if they use https:/.........