Chapter 1 Introducing the Zyxel Device
VMG/XMG Series User’s Guide
20
Figure 1   Zyxel Device’s Internet Access Application
You can also configure IP filtering on the Zyxel Device for secure Internet access. When the IP filter is on, 
all incoming traffic from the Internet to your network is blocked by default unless it is initiated from your 
network. This means that probes from the outside to your network are not allowed, but you can safely 
browse the Internet and download files.
Only use firmware for your Zyxel Device’s specific model. Refer to the 
label on the bottom of your Zyxel Device.
1.1.2  G.fast
You can have gigabit Internet access by connecting the DSL port to the DSL or MODEM jack on a splitter 
or your telephone jack for G.fast.
G.FAST is the acronym for Fast Access to Subscriber Terminals, and the letter G stands for the ITU-T G 
series of recommendations. G.fast is a technology providing gigabit speeds over traditional copper 
twisted-pair wires. G.fast applies Fiber-To-The-distribution point (FTTdp) structure, which reuses the 
deployed copper wire for the final meters.