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vipinrajrc
Participant

Double NAT is possible????

Hi Experts,

I have a scenario like

(public IP)--ISP router  (private IP192.168.1.0/24)   -->  (private IP192.168.1.0/24)  cisco1811  (private IP 10.0.1.0/24)--> switch --> servers(10.0.1.0/24)

The above is my scenario. ISP router is motorola's. Router and LAN IP of modem is in 192.168.1.0/24 range. And the servers in 10.0.1.0/24.

I need to NAT servers with public IP.

My doubt is like...........

1) since 1811 is not having a private ip i cannot NATed right?

2) Can i use double NAT.

3) first NAT servers in 10.0.1.0 range to 192.168.1.0 range using 1811 router. Then from 192.168.1.0 range to a public IP using ISP router....

IS IT POSSIBLE????????? WILL IT WORK????

Please suggest your valid informations..............

Thanks

Vipin

Thanks and Regards, Vipin
2 REPLIES 2
boss.silva
Beginner

Hello,

To be brief: yes, it works.

Regards,

Bruno Silva.

fabios
Beginner

Hello,

I will try to be brief bu less than Bruno.

It might work provided:

a. Your CPE router can be configured to NAT a public IP to the private IP of your 1811

b. Your CPE router can port forward (PAT) its public IP address for the services you need to the private IP of the 1811

c. You are doing this with protocols tha can do NAT traversal OR your CPE router correctly handle the payload changes needed (this also apply to the secnd roud of NAT in the 1811)

The conditions are (a OR b) AND c

Cheers

Fabio