ZyXEL Communications USG FLEX H Series - Page 157

Chapter 10 ALG
USG FLEX H Series User’s Guide
157
The following table describes the labels in this screen.
Table 81 Network > ALG
LABEL DESCRIPTION
Enable FTP ALG Turn on the FTP ALG to detect FTP (File Transfer Program) traffic and help build FTP
sessions through the Zyxel Device’s NAT. Enabling the FTP ALG also allows you to use the
application patrol to detect FTP traffic.
Enable FTP
Transformations
Select this option to have the Zyxel Device modify IP addresses and port numbers
embedded in the FTP data payload to match the Zyxel Device’s NAT environment.
Clear this option if you have an FTP device or server that will modify IP addresses and
port numbers embedded in the FTP data payload to match the Zyxel Device’s NAT
environment.
FTP Signaling Port If you are using a custom TCP port number (not 21) for FTP traffic, enter it here.
Apply Click Apply to save your changes back to the Zyxel Device.
Reset Click Reset to return the screen to its last-saved settings.