I have an ASA that currently has about 100 IPSEC tunnels coming into it. NAT-T is not enabled on the ASA. We have a new customer coming on that is asking for us to enable NAT-T as apparently they have a NAT device on their side in between. My question is, if I enable it on our ASA, what does it do to all the tunnels that don't require it? Is there a way to only run it on this one new tunnel?