3e Technologies International Inc. 527A3 User Manual

It is recommend that IP addresses of virtual server computers hosted 

on the Private Network be manually (statically) assigned to coincide with 

a static server mapping to that specific IP address. Virtual servers should 

not rely on the dynamic IP assignment of the DHCP server function 

which could create unmapped IP address assignments.

– Selection of either UDP, TCP, or Both (TCP and UDP) al-

lows these specified network protocols to pass through during the TCP 

port communication with each virtual server IP address.

Click the entry on the left hand navigation panel for Firewall — 

.

The Demilitarized Zone (DMZ) host allows one computer on the 

Private Network to be totally exposed to the wired network or Internet 

for unrestricted two-way communication. This configuration is typically 

used when a computer is operating a proprietary client software or 2-way 

communication such as video-teleconferencing, where multiple TCP port 

assignments are required for communication. To assign a PC the DMZ 

host status, fill in the Private IP address which is identified as the exposed 

host and click the Apply button. However, any Internet user who knows 

the WAN IP address of the gateway can connect to the DMZ host since 

the firewall feature is disabled for this device, causing a potential security 

risk to data residing on that host. 

Again, it is recommended that IP addresses of DMZ host computers 

on the Private Network be manually (statically) assigned to coincide with 

a static DMZ host mapping to that specific IP address. DMZ hosts should 

not rely on the dynamic IP assignment of DHCP server function which 

could create incorrectly mapped IP address assignments to non-DMZ 

hosts.