Tenda w306r User Guide

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 Wireless-N Broadband Router  
 
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server applications, even though a 
firewall-configuration may allow only a limited 
number of known ports. In the absence of an ALG, 
either the ports would get blocked or the network 
administrator would need to explicitly open up a 
large number of ports in the firewall; rendering the 
network vulnerable to attacks on those ports.   
 
In the default ALG settings, the following 
protocols have enabled. It is recommended to 
keep the settings unchanged.
 
1,FTP 
2,TFTP 
3,PPTP 
4,IPSec 
5,L2TP