How do i use IPTables to forward a port to a different local ip when using DMZ

My router software is garbage, it only allows forwarding certain ports, luckly i found out that DMZ works, i have a linux server, can i point DMZ to that linux server and just use it to forward ports to for example an RDP? If yes, how do I do that?

Question by Zribe on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.