NAT 1 1 : public to public

[Skelliege]

Hi,

I'm facing a little issue with my network.
Basically, what I have is the following :

srv1 : public_ip => router_gateway => internet (no pfsense involved here)
pfsense : public_ip => router_gateway => internet

What I want to do is put srv1 behind my pfsense firewall.

Must I create a GW on my pfsense and change the servers gateway to that gateway ?
If so, if I understand well, I'll have to declare all my servers public ip as virtual addresses on pfsense. Would it not raise problems ?

Or if you have a simpler solution it would be great.

I really appreciate any help you can provide.