User's Manual

001-5008-000(Rev8) Page 73
Eth: 172.31.5.1
RF: 10.0.14.203
RF: 10.0.14.186
Eth: 192.168.205.1
Host 2
Eth: 172.31.5.2
Viper (1)
(NAT disabled)
Viper (2)
(NAT enabled,
RF interface private)
Network
Public Network
Private RF Network
Host 1
Eth: 192.168.205.2
Figure 7.15 - NAT on Viper: RF interface considered private
Notice in
Figure 7.16 that when Host 1 sends a packet, the source IP address is not changed
by Viper (2) because the source does not originate from the private RF network.
Figure 7.16 - Packet flow, RF interface considered private
the previous example, Viper (1) was changing the source IP address of the packet,
aking the Viper (2) believe that the packet was originating from the RF network.
.2.8 User NAT Entries
he user can add three USER IP addresses that will be considered private. Figure 7.17
hows USER1 192.168.205.125 and USER2 192.168.205 will be considered private. If
SER3 192.168.205.87 is connected to the Viper, but not added to the table, USER3
192.168.205.87 would not be considered private.
Packet (1)
Source Address 192.168.205.2
Destination Address 172.31.5.2
Packet (1)
Source Address 192.168.205.2
Destination Address 172.31.5.2
Packet (1)
Source Address 192.168.205
Destination Address 172.31.5.
.2
2
V
V
Host 1
192.168.205.2
Host 2
172.31.5.2
iper 1
NAT disabled,
iper 2
NAT enabled, RF is private
Public Network
Private RF Network
In
m
7
T
s
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