Advanced Security - TP-Link TL-MR3420 User Manual

through the use of cryptographic security services. To allow IPSec tunnels to pass
through the router, click Enable.
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.
SIP ALG - To allow some multimedia clients to communicate across NAT, click

Enable.
Click the Save button to save your settings.

5.6.2 Advanced Security

Choose menu "Advanced→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 5-40.
TL-MR3420 3G/4G Wireless N Router User Guide
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