Enable forwarding between wireless networks

[danielhjames]

In /etc/sysctl.conf file:
# Uncomment the next line to enable packet forwarding for IPv4
net.ipv4.ip_forward=1

Then update while running:
echo 1 > /proc/sys/net/ipv4/ip_forward

Add a route to wlan1 on the upstream Internet side
iptables -t nat -A POSTROUTING -o wlan1 -j MASQUERADE

[obbardc]

See file webapp/wifi-nat-forwarding-notes.txt for other forwarding for ethernet/wan forwarding

[danielhjames]

Thanks @obbardc ! Also I see we can use sysctl -w net.ipv4.ip_forward=1

[obbardc]

@danielhjames Right, but that only enables it for the current session. Editing the sysctl.conf file saves the setting every boot. I think there is a sysctl.conf.d folder, somewhere?