24/tcp   open     telnet             Linux telnetd
53/tcp   filtered domain
80/tcp   filtered http
81/tcp   filtered hosts2-ns
82/tcp   filtered xfer
83/tcp   filtered mit-ml-dev
84/tcp   filtered ctf
85/tcp   filtered mit-ml-dev
135/tcp  filtered msrpc
139/tcp  filtered netbios-ssn
445/tcp  filtered microsoft-ds
1723/tcp open     pptp               MikroTik (Firmware: 1)
2000/tcp filtered cisco-sccp
3389/tcp filtered ms-wbt-server
6881/tcp filtered bittorrent-tracker
8291/tcp open     unknown