A good example is Xirres hosting app using port 6000
If you watch Console you'll see the error
Failed to load resource: net::ERR_UNSAFE_PORT
The only way to bypass this on Chrome is to set --explicitly-allowed-ports=xxx on the shortcut's "target"
Some light reading,
http://superuser.com/questions/188006/ how-to-fix-err-unsafe-port-error-on-chrome-when-browsing-to- unsafe-ports