4.
Web Management
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4.1.5.2.2 Virtual Computer
Virtual Computer enables you to use the original NAT feature, and allows you to
setup the one-to-one mapping of multiple global IP address and local IP
address. Press “Add” button to add new rule for Virtual Computer.
1.
Global IP
: Enter the global IP address assigned by your ISP.
2.
Local IP
: Enter the local IP address of your LAN PC corresponding to the
global IP address.
3.
Enable
: Check this item to enable the Virtual Computer feature.
4.1.5.3 Special AP & ALG
NAT feature can protect Intranet from outside attacks, but sometimes also
blocks some applications, such as SIP VoIP. In this situation, the NAT gateway
needs to do special process (ALG) for each application. This gateway can
handle SIP ALG, so you need to enable this option if you want to use SIP
applications at LAN side of this gateway.
Some applications require multiple connections, like Internet games, Video
conferencing, Internet telephony, etc. Because of the firewall function, these
applications cannot work with a pure NAT router.
The Special Applications
feature allows some of these applications to work with this product. If the
mechanism of Special Applications fails to make an application work, try setting
your computer as the DMZ host instead.