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Community Member

Destination NAT Help

Hi,

Due to ip address confliction issues I am trying to change the destination address of traffic hitting my router when sourced from a 3rd party router.

So, if traffic sourced from 10.0.0.0/24 from 3rd party router targets a loopback on my router, lets say Lo1 - 192.168.1.1/32 can I then modify the destination to 172.16.1.1 and then forward the traffic further into my network where the server on 172.16.1.1 lives.  If it's possible to nat the source to 192.168.1.1 also that would be great.  I am using 1800 routers and statics for the routing.  Is this possible? 

This is very roughly the setup (missing the /30 networks between the routers)

10.0.0.0/24 <-->Lo1 (192.168.1.1/32) <--> Server 172.16.1.1

Thanks

Andrew

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3 REPLIES
Community Member

Destination NAT Help

Hi ,

if you are trying to access to server (private address ) from the network 10.0.0.0, the best way is to use Nat Overloading method (PAT) , for example , you can specify all packets comes with port=5001 must be forwarded to server 172.16.1.1

refers to link

http://www.cisco.com/en/US/tech/tk175/tk15/technologies_configuration_example09186a0080093e51.shtml for deep details

Community Member

Destination NAT Help

Hi,

NAT overload would change the source of the packets.  I'm trying to get the users (10.0.0.0/24) to target 192.168.1.1 and this be changed to 172.16.1.1 by nat or any other means.  This is because the users already have 172.16.1.1 on their network, hence the ip address conflict.

Hope this clarifies it a little.

Thanks

Andrew

Community Member

Destination NAT Help

can you provide architucture of your LAN with IP plan address for users and server

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