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DMZ Host (Route Mode for VGW-420FS/820FS)
3.5.4
If the DMZ service is enabled, the devices in the wide-area network are allowed to have direct access to
the devices in the DMZ (demilitarized zone). In this way, devices in the wide-area network can visit the
devices which are in the local area network and meanwhile the devices in the local area network are
protected.
After the configurations are finished, please restart the VGW-X20FS SERIES
for the configurations to take effect.
Forward Rule (Route Mode for VGW-420FS/820FS)
3.5.5
Sometimes, a device under the LAN network needs to provide a port for communication with the WAN
network (such as providing the port 21 for FTP service). In those cases, user can configure forwarding
rules for that network device.
Service port is the port that provides service for the WAN network, while IP address is the IP address of
the network device under the LAN network. The protocol is TCP or UDP.
The difference between forwarding rule and DMZ host is that DMZ Host offers all ports (0-1024) and
protocols for outside telecommunication while forwarding rule only offers a single or several ports and
protocols of TCP or UDP.
Figure 3.7-5 DMZ Configuration Interface
Figure 3.7-6 Configuration Interface for Forwarding Rules
4-/8-/16-/24-/32-Port SIP Internet Telephony Gateway
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