Change UDP port for NAT-T during L2L between two Cisco 3000 Concentrator

[adalessandro]

Is it possible to "drive" the negotiation of the udp port used by the two concentrators during L2L connection and NAT-T?

It would be very useful in my setup to have the L2L using udp/10007 rather than udp/4500.

Thank you.

[jackko]

i don't think the nat-t port can be manipulated.

couple alternatives i can think of is to use tcp over ipsec, and then you will be able to use whatever port you prefer; or you may configure port forwarding on the router/firewall in front of the concentrator.