Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.

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VPN IPsec site to site between Sophos and Fortigate

Hello,

I have to create several site-to-site IPsec between Fortigate Firewall and our Head Office Sophos Firewall.
All connections must go to the same subnet in our Head Office.

I've configured the Sophos as "Respond Only", the subnets are configured, and the policies are enabled.
The problem is that the IPsec only works when using the wildcard * on the remote gateway. And when I do that, I can't use a different pre-shared key for the other connections. As soon as I try to use the public static address of the Fortigate as the remote Gateway, the connection stop and don't work anymore. 

The log say : "Traffic selectors don't match. Check the configured local and remote subnets on both devices"

But the local and remote subnet are the same as when using * and should be working, right?

So far, I have tried to use the local and remote ID on both firewall, and also to use the Sophos to initiate the connection without success.
What am I missing here?

Thanks



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  • I've reconfigured from scratch using different encryption, but the same error appears. It works fine with the wildcard and not with the static IP. It doesn't seem very logical. I managed to make it work with local/remote ID as a workaround.

    It should be ok to use different key for all the connections, and as both  and suggest, I'll update to v20 when possible.

    Thank you very much for your help.