User manual

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The setting page as below:
¾ IPSec ALG: It is an encryption technology. Select it to enable IPSec ALG,
the default is enable.
¾ 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 enabling.
¾ PPTP ALG: Select it enable PPTP ALG, the default is enable.
Shows the NAT TCP mapping table
Shows the NAT UDP mapping table. NAT Table Option: