VPN IPsec through F5 LTM

Hello folks:

I need your kind help for a design considering the following scenario:

Nowadays, I have a firewall that is managing a public segment 200.200.200.0/24 and it is using the 200.200.200.10 to perform two actions: 1) to establish VPN IPsec tunnels towards many other IPsec peers in the internet, and 2) to take out users navigation traffic from the internal network.

I need to displace the firewall so the LTM can manage the public segment. How could achieve this? I need to use the LTM to allow the users navigation and to let pass (passthrough) the VPN IPsec traffic. For the first thing, I think I need a SNAT with 200.200.200.10 as the translation address, but I am not sure about how to treat the VPN IPsec traffic. Do I need special virtual servers to achieve that? Do you think I will have troubles or conflicts because I only have one IP to do both things?

Thanks folks..!

Regards

Jorge