DG-VG2300N User
Manual
62
Click the Usual Application Name drop-down menu to choose the application you want to setup for port
triggering. When you have chosen an application the default Trigger settings will populate the table below.
If the application you want to setup isn’t listed, click the User-defined Application Name radio button and
type in a name for the trigger in the Custom application field. Configure the Start Match Port, End Match
Port, Trigger Protocol, Start Relate Port, End Relate Port, Open Protocol and NAT type settings for the port
trigger you want to configure.
When you have finished click the
Apply changes
button.
FTP ALG Port
Click
FTP ALG Port
in the left pane, the page shown in the following figure appears. The common port for
FTP connection is port 21, and a common ALG monitors the TCP port 21 to ensure NAT pass-through of
FTP. By enabling this function, when the FTP server connection port is not port 21, the FTP ALG module
will be informed to monitor other TCP ports to ensure NAT pass-through of FTP.
The following table describes the parameters and buttons of this page:
Field
Description
FTP ALG port
Set an FTP ALG port.
Add Dest Ports
Add a port configuration.
Delete Selected DestPort
Delete a selected port configuration from the list.
