Alg - ZyXEL Communications LTE Series User Manual

server to receive packets from ports not specified in the Port Triggering screen. Click Network Setting >
NAT > DMZ to open the DMZ screen.
Note: Use an IPv4 address for the DMZ server.
Note: Enter the IP address and click Apply to activate the DMZ host.
Otherwise, clear the IP address field and click Apply to de-activate the DMZ host.
Figure 98 Network Setting > NAT > DMZ
The following table describes the fields in this screen.
Table 48 Network Setting > NAT > DMZ
LABEL
Default Server
Address
Apply
Cancel

9.5 ALG

Click Network Setting > NAT > ALG to open the ALG screen. Use this screen to enable and disable the
NAT Application Layer Gateway (ALG) in the Zyxel Device.
Application Layer Gateway (ALG) allows certain applications such as File Transfer Protocol (FTP), Session
Initiation Protocol (SIP), or file transfer in Instant Messaging (IM) applications to pass through the Zyxel
Device.
Chapter 9 Network Address Translation (NAT)
DESCRIPTION
Enter the IP address of the default server which receives packets from ports that are not
specified in the Port Forwarding screen.
Note: If you do not assign a default server, the Zyxel Device discards all packets
received for ports not specified in the virtual server configuration.
Click this to save your changes back to the Zyxel Device.
Click Cancel to restore your previously saved settings.
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