Jolla USB tethering hacks

Run these commands in a terminal, or make a bash script if you often need them!

To turn off simply reboot your Jolla, of course the Developer Mode must be activated before.

3G connection —> USB tethering #

# echo 1 > /proc/sys/net/ipv4/ip_forward
# /sbin/iptables -t nat -A POSTROUTING -o rmnet0 -j MASQUERADE
# /sbin/iptables -A FORWARD -i rmnet0 -o rndis0 -m state --state \ RELATED,ESTABLISHED -j ACCEPT
# /sbin/iptables -A FORWARD -i rndis0 -o rmnet0 -j ACCEPT

WiFi connection —> USB tethering #

It might seem strange but sometimes when I’m in class I need to route the WiFi to my MacBook via USB, specially during some awkward Linux setup.

# echo 1 > /proc/sys/net/ipv4/ip_forward
# /sbin/iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
# /sbin/iptables -A FORWARD -i wlan0 -o rndis0 -m state --state \ RELATED,ESTABLISHED -j ACCEPT
# /sbin/iptables -A FORWARD -i rndis0 -o wlan0 -j ACCEPT

After this, you’ll need to set the new interface that popped out on your network manager with a static IP address, because by now Jolla doesn’t ship with a DHCP server configured to serve addresses to rndis0.

Basically, you need to set an IP in the same area of the one reported under Settings > System > Developer Mode > USB IP address.

For example if your Jolla has 192.168.2.15 reported there, set it as the router, set the machine IP to 192.168.2.17, set an appropriated subnet mask which in this case is 255.255.0.0 and set a DNS server like OpenDNS, `208.67.222$

If for some (even more) strange situation you’ll need to do this on OSX, install the latest version of HoRNDIS , reboot and configure as explained before.