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Mapping IP Addresses

Currently setting up a new VPN tunnel for a new application server.  What would be the best practice for mapping a new Ip range of to the existing LAN of  The tunnel has been created and is connecting; however, the vender cannot connect to the local devices.  The new server requires an Ip range of and the current network is on  What policies or methods should we be implementing??

Community Manager
Community Manager

Hello mcpcs,


Thank you for using the Community Forum.

I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible.



Anthony-Fortinet Community Team.



Does the vendor need to be source translated to 


What does your current phase 2 configuration look like? 


Can you grab the output for the below? 

diag vpn tunnel list name <VPN name>




Yes, and I have attached the phase 2 info.Fortinet Screenshot Phase 2.jpg


hm I have similar case here where I need to map vpn ips to a local subnet to make some service work over vpn that is limited to a specific subnet here.


I configured a s2s ipsec with split tunneling enabled and mode config enabled. So vpn clients get an ip from me and also get routes from me. 

I did not set any p2 selector (it is set to hence there is split tunneling plus routing plus policies to limit access). 

I then created a policy that allows traffic from vpn subnet to the service subnet using snat with using an nat ip pool out of the local subnet. So vpn ips get snatted to local subnet when they try to access that service. Works fine here.


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