120 20131-301
Gemini G3 - User Manual
32
4.7.3.5.1.1
NAT on the Base Unit (Paragon3)
The Paragon3 unit is equipped with a management port (the Ethernet 2 interface). When NAT is en-
abled on the Paragon3 unit, the network covered by the Ethernet 2 interface is considered private.
Figure 23 - NAT Enabled on Paragon3
An IP packet sent from the private network towards the External network would have its source IP
address replaced by the Ethernet 1 IP address of the Paragon3 radiomodem.
Figure 24 - Private to Public (External)
An IP packet sent from the private network towards the RF network will have its source IP address
replaced by the RF IP address of the Paragon3 radiomodem.
Figure 25 - Paragon3 - Private to Public Network (RF)
Packet (1)
Source Address 172.30.1.2
Destination Address 200.1.1.1
Packet (1)
Source Address 192.168.1.1
Destination Address 200.1.1.1
172.30.1.1/24
192.168.1.1/24
Paragon3 (NAT Enabled)
Management Host 1
172.30.1.2/24
External Host 1
200.1.1.1/24
Private network
(172.30.1.0/24)
Public network
(External)
Packet (1)
Source Address 172.30.1.2
Destination Address 173.30.1.2
Packet (1)
Source Address 10.0.1.1
Destination Address 173.30.1.2
172.30.1.1/24
10.0.1.1/24
Paragon3 (NAT Enabled)
Management Host 1
172.30.1.2/24
Mobile Host 1
173.30.1.2/24
Private network
(172.30.1.0/24)
Public network
(RF)
External Host 1
200.1.1.1/24
RF Network
Public Network
(
External N RF N
Mobile 1 N Mobile 2 Net-
work
)
Mobile 1 Network
Base
(Paragon3)
Ethernet 1
192.168.1.1/24
Mobile Host 1
173.30.1.2/24
Mobile (G3)
Mobile (G3)
Ethernet 2
172.30.1.1/24
RF 10.0.1.2/24
RF 10.0.1.3/24
173.30.1.1/24
174.30.1.1/24
Mobile Host 2
174.30.1.2/24
Mobile 2 Network
External
Network
Management Host 1
172.30.1.2/24
Management Host 2
172.30.1.3/24
Private Network
172.30.1.0/24
RF 10.0.1.1/24