Advanced Security - TP-Link TL-WR743ND User Manual

L2TP Passthrough - Layer 2 Tunneling Protocol (L2TP) is the method used to enable

Point-to-Point sessions via the Internet on the Layer 2 level. To allow L2TP tunnels to
pass through the Router, keep the default, Enabled.
IPSec Passthrough - Internet Protocol Security (IPSec) is a suite of protocols for

ensuring private, secure communications over Internet Protocol (IP) networks, through
the use of cryptographic security services. To allow IPSec tunnels to pass through the
Router, keep the default, Enabled.
ALG - It is recommended to enable Application Layer Gateway (ALG) because ALG allows

customized Network Address Translation (NAT) traversal filters to be plugged into the
gateway to support address and port translation for certain application layer "control/data"
protocols such as FTP, TFTP, H323 etc.
FTP ALG - To allow FTP clients and servers to transfer data across NAT, keep the

default Enable.
TFTP ALG - To allow TFTP clients and servers to transfer data across NAT, keep the

default Enable.
H323 ALG - To allow Microsoft NetMeeting clients to communicate across NAT, keep

the default Enable.
RTSP ALG - To allow some media player clients to communicate with some streaming

media servers across NAT, click Enable.
Click the Save button to save your settings.

4.10.2 Advanced Security

Choose menu "Security → Advanced Security", and then you can protect the Router from
being attacked by TCP-SYN Flood, UDP Flood and ICMP-Flood in the screen as shown in Figure
4-46.
TL-WR743ND 150Mbps Wireless AP/Client Router
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