Advanced Security - TP-Link Archer C55 User Manual

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.
SIP ALG - To allow SIP clients and servers 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.
4.12.2

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 the following
figure.
DoS Protection - Denial of Service protection. Check the Enable or Disable button to

enable or disable the DoS protection function. Only when it is enabled, will the flood filters be
enabled.
Archer C55 AC1200 Wireless Dual Band Gigabit Router
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