Вопрос по блокированию портов.

Ну, по отдельности сервисные порты заблокировать нельзя,  а вот доступ по SSH TELNET и тп, можно из веб интерфейса.

  Для веб логина:

 Advanced > Settings > Security > Web Login and set Web login. The options are as follows:

§  Enable(default): The web interface is always accessible.

§  Via Wi-Fi only: You can log in to the web interface of the endpoint from a PC only after the PC connects to the Wi-Fi hotspot on the endpoint.

§  Disable: Web login is not allowed.

·        Support the user to submit the logout application.

When you have logged in to the web interface, you can click Exit in the upper right. The login interface is displayed.

·        The endpoint supports a maximum of 10 concurrent logins to the web interface.

·        Multiple users can use the same account to log in to the web interface of the endpoint simultaneously.

SSH и Telnet::

·        On the remote control UI, choose Advanced > Settings > Security > SSH/Telnet and select SSH or Telnet.

·        On the web interface, choose System Settings > Security > SSH/Telnet and set SSH or Telnet login to Enable.