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Configuring Advanced Settings
Gigaset SE555 WLAN dsl / en / A31008-M1037-B181-1-7619 / configure_router.fm / 27.06.2006
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The router checks all outgoing data for the port number and protocol. If it identifies
a match of port and protocol for a defined trigger 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.
When the Gigaset SE555 WLAN dsl 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 Gigaset SE555 WLAN dsl to carry out the
following tasks:
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Set up port triggering for certain applications (see page 64),
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Set up the Gigaset SE555 WLAN dsl as a virtual server by configuring Port Forward-
ing (see page 65),
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Open the firewall for selected PCs (see page 67).
You can activate or deactivate the NAT function (by default the NAT function is
activated).
ì
In the
Advanced Settings
–
Internet
menu, select
Address Translation (NAT)
and
then select the required option.
Note:
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An application that is configured for port triggering can only be run by one user in
the local network at a time.
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As long as the public ports are open, they can be used by unauthorised persons to
gain access to a PC in the local network.
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
Gigaset SE555 WLAN dsl, you must select
Never expires
(see page 71) as the setting
in the
Local Network
menu entry for the
Lease time
or assign static IP addresses for
the PCs.
Note:
Internet access is not possible if the NAT function is deactivated.
Summary of Contents for Gigaset SE555 WLAN dsl
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