How to setup a layer 3 tunnel over SSH because sometimes a SOCKS proxy is just plain shit.

instructions.txt

#Pivotbox changes:
openvpn --mktun --dev tun0
ifconfig tun0 1.1.1.2 netmask 255.255.255.252 up
#IP Forwarding and PermitTunnel yes only need to be done once
echo 1 > /proc/sys/net/ipv4/ip_forward
echo "PermitTunnel yes" >> /etc/ssh/sshd_config 
service sshd reload
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE


#local kali vm
openvpn --mktun --dev tun0
ifconfig tun0 1.1.1.1 netmask 255.255.255.252 up
ssh -w 0:0 -fN user@linuxbox
#hostFile is one IP per line you can get almost that by exporting the hosts from the msf database using hosts -c address -o /tmp/hostFile
tr -d '"' /tmp/hostFile > hosts
cat hosts | while read LINE; do
route add -host $LINE dev tun0
done