Tp-Link TL-WR2543ND [76/126] Advanced security

TL-WR2543ND 450Mbps Dual-Band Wireless N Gigabit Router User Guide

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¾ VPN - VPN Passthrough must be enabled if you want to allow VPN tunnels using VPN

protocols to pass through the Router.

• 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.

• 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.

• 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, click Enable.

¾ 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, click Enable.

• TFTP ALG - To allow TFTP clients and servers to transfer data across NAT, click

Enable.

• H323 ALG - To allow Microsoft NetMeeting clients to communicate across NAT, click

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

4-55.