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Participant

Overlapping networks in S2S VPN

Hello, 

 

I have an FTD 1140 and I am trying to migrate the config from an ASA 5515. 

The FTD is managed locally through FDM. 

There is not an automatic migration process, so I am performing it manually. 

 

I am stuck at S2S VPN. 

I have a connection with the same local and remote networks. The peer IP address and the interface are different

But I get the below message

Site-to-Site profile name1 has overlapping local and remote network address space with profile name2

 

Does anyone know a way to overcome this?

 

Thanks and regards, 

Konstantinos

1 REPLY 1
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VIP Advisor

Hi,

If you have the same local and remote networks and you don't want to re-ip address, then you'll have to use NAT. Reference below is for ASA (there probably isn't a guide for FDM).

https://www.cisco.com/c/en/us/support/docs/security/asa-5500-x-series-firewalls/211275-Configuration-Example-of-ASA-VPN-with-Ov.html

 

HTH

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