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Field name Explanation
Protocol Set IPSec ALG - It is an encryption technology. Select it to enable IPSec
ALG, the default is enabled.
FTP ALG - FTP is a service of connection layer which can transform
intranet IP into extranet IP when intranet IP is sending out packet.
Select it to enable FTP ALG, the default is enabled.
PPTP ALG - Select it enable PPTP ALG, the default is enabled.
NAT Table Shows the NAT TC and UDP mapping table.
NAT Table Option Transfer Type - Select the NAT mapping protocol style, TCP or UDP.