Multiple Containers on One External IP Address

Sorry if this has been asked before. However, I’m Stuck on this networking issue I’m having.
I’ve been using portainer as I’m a New Docker user, and all I’m trying to do is set up 3 Containers to have the Same External IP Address.

I’ve googled everything I can think of, and maybe I’m not googling the right thing - But I’ve spent hours trying to figure this out.

What I’m trying to accomplish:

  • Running 4 Containers on 234.141.332.68 (all using different ports)
  • Only have the 3 Containers on the .68 respond to the .68 IP address (Eg: Don’t want to go to 234.141.332.66:8080 and get to the same application)

How would I go about doing this? I’ve set up a Maclan, but then I’m unable to use the IP address more than once as it’s already being used.

Thanks in Advanced!