PLANET ADN-4000 - Manual (Page 58)

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port, then it will open the assigned public ports and notes the IP address of the PC
that sent the data. If data comes back from the Internet via one of these public ports,
the router allows it through and directs it to the appropriate PC. A trigger event
always comes from a PC within the local network. If a trigger port is addressed from
outside, the router simply ignores it.
Note:
‹ An application that is configured for port triggering can only be run by one user in the
local network at a time.
‹ As long as the public ports are open, they can be used by unauthorized persons to gain
access to a PC in the local network.
When the DSL Router is supplied, the NAT function (Network Address Translation) is
activated, i.e. all IP addresses of PCs in the local network are converted to the router's public
IP address when accessing the Internet. You can use the NAT settings to configure the DSL
Router to carry out the following tasks:
Note:
For the functions described below, the IP addresses of the PCs must remain unchanged. If
the IP addresses of the PCs are assigned via the DHCP server of the DSL Router, you must
select Never expires (see page79) as the settings in the Local Network menu entry for the
Lease time or assign static IP addresses for the PCs.
You can activate or deactivate the NAT function (by default the NAT function is activated).