TP-LINK AC750 User Manual

 

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Figure 4-69 Basic Security 

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Firewall - A firewall protects your network from the outside world. Here you can enable or 

disable the router’s firewall. 

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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 

traffic passing through the session conforms to the protocol. SPI Firewall is enabled by 

factory default. If you want all the computers on the LAN exposed to the outside world, 

you can disable it.   

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VPN - VPN Passthrough must be enabled if you want to allow VPN tunnels using VPN 

protocols to pass through the router. 

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PPTP Passthrough - Point-to-Point Tunneling Protocol (PPTP) allows the 

Point-to-Point Protocol (PPP) to be tunneled through an IP network. To allow PPTP 

tunnels to pass through the router, click Enable. 

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L2TP Passthrough - Layer Two Tunneling Protocol (L2TP) is the method used to 

enable Point-to-Point sessions via the Internet on the Layer Two level. To allow L2TP 

tunnels to pass through the router, click Enable. 

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IPSec Passthrough - Internet Protocol security (IPSec) is a suite of protocols for 

ensuring private, secure communications over Internet Protocol (IP) networks, through