Hi, using adminsitration screen to limit to only local administration doesn't change the fact that it is completly exposed from the WAN side. 

21/tcp    open  ftp
22/tcp    open  ssh
23/tcp    open  telnet
53/tcp    open  domain
80/tcp    open  http
1900/tcp  open  upnp
8200/tcp  open  trivnet1
20005/tcp open  btx