TL-MR3220 3G/4G Wireless N Router User Guide
-55-
z Status - The port’s status displayed here. “Enabled” means that port is still active.
Otherwise, the port is inactive.
Click Refresh to update the Current UPnP Settings List.
4.9 Security
Figure 4-41 The Security menu
There are four submenus under the Security menu as shown in Figure 4-41: Basic Security,
Advanced Security, Local Management and Remote Management. Click any of them, and
you will be able to configure the corresponding function.

4.9.1 Basic Security

Choose menu “Security Basic Security”, you can configure the basic security in the
screen as shown in Figure 4-42.
Figure 4-42 Basic Security
¾ Firewall - A firewall protects your network from the outside world. Here you can enable or
disable the Router’s firewall.
z SPI Firewall - SPI (Stateful Packet Inspection, also known as dynamic packet filtering)
helps to prevent cyber attacks by tracking more state per session. It validates that the