I've just installed a NSG50 at a client's office, but this client have a VPN server (L2TP over IPSec), and need the ports 1701, 500 and 4500 to be forwarded to this server.
My problem is that the Nebula interface prevent me to forward ports 500 or 4500, probably because they are used by the embedded VPN gateway.
So, I'm stuck and my client is angry.
Is there a way to do what I need to do, or do I need to replace the NSG50 by an USG20 ?
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