2

I have a bunch of RPI's running as web-servers at home. I can connect to one of my RPI's(RPI-1) via VPN and it can see the other RPI's on the LAN. From my VPN connection I can see the website hosted on RPI-1 but not the other RPI's websites(Because they are on the LAN and not connected on the VPN).

Is there a way that I can use RPI-1 to do port forwarding? Making RPI-1:9000 point to one of the other RPI's on the LAN?

5

You can either

  • use iptables (which should be preinstalled on most Linux distributions) to do actual port forwarding (i.e. make rpi2's webserver accessible via http://rpi1:2000/ or some other port of your choice) or
  • use the webserver on rpi1 as a reverse proxy to make rpi2 accessible via a (virtual) directory like http://rpi1/rpi2/. The configuration required for that depends on what webserver software is doing the proxying (in this case, the one on rpi1); e.g. for Apache:

    ProxyRequests Off
    ProxyPreserveHost On
    <Proxy *>
        Order deny,allow
        Allow from all
    </Proxy>
    ProxyPass /rpi2/ http://rpi2/
    ProxyPassReverse /rpi2/ http://rpi2/
    

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