Data Over Coax Gateway Ref.769301
36
• Restriced Cone: Address Restricted Cone-NAT, allows an external host (hAddr: Any) can be
connected to a device on the LAN (iaddr: iPort) sending packets to WAN port (eAddr: ePort)
only if you have previously established a connection with it. This option allows once you have
set the NAT connection, any port on the host to which the connection has been established to
connect to the service established. Change the port of the established connection is allowed but
connection tries from other external IP address of the external host are denied.
• Cone (less restrictive): Allows from any external host (hAddr:hport) can be connected to a
device on the LAN (iaddr: iPort) sending packets to WAN port (eAddr: ePort). This option once
the connection has been established on the NAT, any external host and port to connect to the
service provided.
Depending on the service that users
require the right type of NAT should
be established.
So for simple internet browsing the
most restrictive mode (LinuxMode)
is sufficient.
If users require advanced NAT
services necessary for some
services such as game servers,
STUN clients, torrent, etc. be
necessary to establish a less
restrictive NAT mode (Full Cone
NAT) so that any external host can
connect to the NAT connection
initially established.
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