It's not an intrusion, it is created by default to enable administration of the web server via a browser. You can access it by entering
https://[SERVERNAME]:8098, you will need a SSL certificate which can be a
self signed[
^] one created using SelfSSL, installed on the server, at which point it will ask you for a valid user account on the server.
If you don't use it or don't want to use it you can just stop that particular web site.