Chapter 13 ALG
NXC Series User’s Guide
197
Figure 106 Configuration > Network > ALG
The following table describes the labels in this screen.
13.3 Technical Reference
The following section contains additional technical information about the features described in this
chapter.
FTP
File Transfer Protocol (FTP) is an Internet file transfer service that operates on the Internet and over TCP/IP
networks. A system running the FTP server accepts commands from a system running an FTP client. The
service allows users to send commands to the server for uploading and downloading files.
Table 85 Configuration > 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 NXC’s NAT.
Enable FTP
Transformations
Select this option to have the NXC modify IP addresses and port numbers embedded in the
FTP data payload to match the NXC’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 NXC’s NAT environment.
FTP Signaling Port If you are using a custom TCP port number (not 21) for FTP traffic, enter it here.
Additional FTP
Signaling Port for
Transformations
If you are also using FTP on an additional TCP port number, enter it here.
Apply Click Apply to save your changes back to the NXC.
Reset Click Reset to return the screen to its last-saved settings.
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