Reverse Proxy Webapp made with Vue and Flask

[tallnerd1985]

Hi there,

My Google-fu is failing me because I think I might be asking the wrong question or solution but here goes. At work, I got a VM with Debian setup for the sole purpose of being a reverse proxy for any webapps we host as a docker container or hosted on a VM. At home, I've always done a similar setup with usenet related webapps and never had any problem but recently at work trying to reverse proxy this webapp my coworker has created has been a pain to figure out what I am missing. Let's say my reverse proxy VM lives at 192.168.1.2 and has proper firewall rules to route 80/443 to it along with the correct DNS of webapp.mycompany.com records for the public IP to point at NPM. From there, I got a webapp hosted on a VM at 192.168.1.5 listening in on port 80 and I can get to the landing page successfully using NPM via the reverse host proxy I entered in with webapp.mycompany.com and it points to 192.168.1.5:80 . The problem at hand starts when I input a lets say account number and submit, it times out and does nothing but stay at the landing page opposed to via intranet accessing the webapp, it spawns a /subdirectory page with the corresponding information I need. I noticed in the Chrome logs that after I hit submit, it sends the info to 192.168.1.5:5000 and that's where it stalls out at when using via NPM. What terminology should I investigate to solve this or possibly what is the solution?

Thanks in advance!