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Q.
What are the differences between Port Mapping, Open Ports
and DMZ ?
The Vigor router actually supports three variants of port
mapping methods.
Port redirection -
The packet is forwarded onto a specific local PC with the
specified port number. You can also translate the port to
another local port.
Open Port -
As Port Redirection (described above) but allows you to define
a range of ports.
DMZ Host - This
opens up a single PC completely. All incoming packets will
be forwarded onto the PC in the DMZ. The only exceptions are
packets received in response to outgoing requests from other
local PC's or incoming packets which match rules in the other
two methods.
When using combinations of these three methods, there is a
priority structure. i.e. if a rule in one method coincides
with a rule in another method, then there is strict precedence.
The precedence is as follows:
Port Redirection
-› Open Port -› DMZ |
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Page last modified : 13 October 2008 |