Port Forward over ppp0

Hi,

I want to use my pptpd server to forward traffic over a remote site with a cctv camera.

I want the flow to look like this

Browse to public address of pptpd server on port 8888
Server uses iptables to route/Nat traffic over ppp0 to camera 192.168.88.200:80

217.37.xx.3x pub IP
172.28.2.1(pptpd server ip)
172.28.2.100 (pptpd client ip - remote MikroTik)
192.168.88.0/24 camera network