NGINX only for forwarding to LAN (no replies)

Hi@all,

first of all a "hello" to the round. I am new here :-)

I want to set up NGINX on my firewall/router (IPFire). But only as reverse proxy. There are no websites running on the IPFire.

The IP-Fire has a fixed IP on the WAN interface and can be reached from the Internet.

[IPFire]
WAN: 10.20.30.40
LAN: 192.168.xx.254

Behind the firewall, i.e. in the LAN, there are several web servers each running on the same port (80) but on different physical servers:

[Server1]
LAN: 192.168.xx.5

[Server2]
LAN: 192.168.xx.6

Furthermore I have an external, official domain (mydomain.de). On the external root server I have created two subdomains which I redirect to the IPFire's fixed IP:

gw.mydomain.com -> http://10.20.30.40
cloud.mydomain.com -> http://10.20.30.40

NGINX on the IPfire should now forward all requests directed to gw.mydomain.de to the server 192.168.xx.5 (and turück)

and requests addressed to cloud.mydomain.com to LAN: 192.168.xx.6

As far as I know the header has to be rewritten so that the remote client thinks it is communicating with xxxx.mydomain.de and not with 192.168.xx.y.

I tried for hours yesterday to get this with examples from the internet but nothing worked.

Does this work at all? Can anyone help me?

best regards
pixel24