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Chapter 14
Network Security
14. 1.  Firewall & DoS Protection
The SPI (Stateful Packet Inspection) Firewall and DoS (Denial of Service) Protection  
protect the mesh device from cyber attacks. 
The SPI Firewall can prevent cyber attacks and validate the traffic that is passing 
through the mesh device based on the protocol. This function is enabled by default, 
and it is recommended to keep the default settings.
DoS Protection can protect your home network against DoS attacks from flooding your 
network with server requests. Follow the steps below to configure DoS Protection.
1.  Visit http://tplinkwifi.net or http://192.168.88.1, and log in with the password you 
set for the mesh device.
2.  Go to Advanced > Security > Firewall & DoS Protection.
3.  Enable DoS Protection.
4.  Set the protection level (Low, Middle or High) for ICMP-Flood Attack Filtering, UDP-
Flood Attack Filtering and TCP-Flood Attack Filtering.
•  ICMP-Flood Attack Filtering - Enable to prevent the ICMP (Internet Control 
Message Protocol) flood attack.
•  UDP-Flood Attack Filtering - Enable to prevent the UDP (User Datagram 
Protocol) flood attack.
•  TCP-Flood Attack Filtering - Enable to prevent the TCP (Transmission Control 
Protocol) flood attack.
5.  Click Save.
Tips: 
1.  The level of protection is based on the number of traffic packets. You can specify the level under DoS Protection 
Level Settings.