Hi there:

In my micro-observatory I have an RPi4 running Stellarmate for the telescope and an RPi4 running Astroberry Server for the roof, allskycam, etc. Both are wired to my home network via ethernet cable. I am on a mission to dispense with as many cables as possible as I like to use my observatory in the extreme cold and cables have a tendency to stiffen up and break in -35C for some reason! So I have a bluetooth adapter for the mount, and everything else mounted on the scope itself so I only have a 12v power cable going to the scope. The scope is now connecting wirelessly to the observatory RPI hotspot, the observatory scope is hard wired.

However, the hotspot is NATted so I can only see the telescope RPi from the observatory computer. Is there any way to set up Astroberry server up as a bridge so the telescope gets an IP on my home network and is accessible from my desk? Right now I have to RDP to the obs RPi then NoVNC to the observatory computer, or run KStars/EKOS on the observatory computer.

I attempted to set up iptables and routing like thus:

sudo iptables -F
sudo iptables -t nat -F
sudo iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
sudo iptables -A FORWARD -i wlan0 -o eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
sudo iptables -A FORWARD -i eth0 -o wlan0 -j ACCEPT

sudo nano /proc/sys/net/ipv4/ip_forward
Set net.ipv4.ip_forward=1

sudo ip route del 0/0 dev eth0 &> /dev/null
a=`route | awk "/${wlan}/"'{print $5+1;exit}'`
sudo route add -net default gw 192.168.2.1 netmask 0.0.0.0 dev eth0 metric $a

However I'm not clear on hot the hotspot is set up on the Astroberry Server to turn off NAT. Can anyone help?

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