Connect Cloud Run service to an IPSec VPN

I have a back-end service running on cloud run,

i need to integrate upload/download of application generated files to an external file server (Windows Server) through smb, and in order to connect to this file server, the OS/service, needs connect to an IPSec VPN.

So is it possible to connect a single Cloud Run service to an external IPSec VPN ?

Or what other alternatives can i try to achieve the same goal ?

Thanks.

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