I'm wondering why my Obi202 has all the open ports it does. While the WAN-side port is connected to my other computers behind a router gateway, nmap shows me that the Obi202 has an open port 23 (telnet?), 53 (domain name server?), and 80 (an http server).
I understand the port 80 web server (remote web-GUI configuration, and all). But why is there a DNS port open? Or even telnet?
