User's Manual

001-5008-000 rev5_2.doc Page 68

Figure 7.14 NAT on ViPR: RF interface considered private

Notice in Figure 7.15 that when Host 1 sends a packet, the source IP address is not changed

by ViPR (2) because the source does not originate from the private RF network.

Figure 7.15 Packet flow, RF interface considered private

In the previous example, ViPR (1) was changing the source IP address of the packet,

making the ViPR (2) believe that the packet was originating from the RF network.

7.2.6 User NAT Entries

The user can add three USER IP addresses that will be considered private. Figure 7.16

shows USER1 192.168.205.125 and USER2 192.168.205 will be considered private. If

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

ViPR (1)

(NAT disabled)

ViPR (2)

(NAT enabled,

RF interface private)

Network

Host 1

Eth: 192.168.205.2

Public Network

Private RF Network

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 192.168.205.2

Destination Address 172.31.5.2

Host 1

192.168.205.2

Host 2

172.31.5.2

iPR 1

NAT disabled,

iPR 2

NAT enabled, RF is private

Public Network

Private RF Network