Home network

Béziers

SFR's IPv4 is currently being unreliable due to congestion.

We are routing all traffic via IPv6 and SSH on a SOCKS5 proxy to Psiren.

• Configure Tun2socks PPA on Ubuntu
• Setup Tun2socks
• Build the full badvpn-master on Psiren for UDP proxying

The commands we are using on our home router are:

• echo 1 > /proc/sys/net/ipv4/ip_forward
• iptables -t nat -A POSTROUTING -o eno1 -j MASQUERADE
• iptables -t nat -A POSTROUTING -o tun0 -j MASQUERADE
• iptables -P FORWARD ACCEPT
• sudo ip tuntap add dev tun0 mode tun user marc
• sudo ifconfig tun0 10.0.0.1 netmask 255.255.255.0
• badvpn-tun2socks --tundev tun0 --netif-ipaddr 10.0.0.2 --netif-netmask 255.255.255.0 --socks-server-addr 127.0.0.1:8080 --udpgw-remote-server-addr 127.0.0.1:7300
• route add default gw 10.0.0.2 metric 6 # 6 is a lower metric than the regular default gateway

However, create the file /etc/network/if-up.d/ipv6 with the contents:

#!/bin/bash
# Route all traffic to Psiren

date >> /var/log/upwahoo
echo $IFACE >> /var/log/upwahoo
echo $MODE >> /var/log/upwahoo
echo $ADDRFAM >> /var/log/upwahoo
echo Blah >> /var/log/upwahoo
echo Moose >> /var/log/upwahoo

# Don't bother to restart sshd when lo is configured.
if [ "$IFACE" = lo ]; then
	exit 0
fi

# Only run from ifup.
if [ "$MODE" != start ]; then
	exit 0
fi

# Don't do anything if we've already configured tun0
FOUND=`grep "tun0" /proc/net/dev`
if  [ -n "$FOUND" ] ; then
	exit 0
fi

echo DoStuff >> /var/log/upwahoo

# Set up tun2socks info
ip tuntap add dev tun0 mode tun user tun2socks
ifconfig tun0 10.0.0.1 netmask 255.255.255.0
route add default gw 10.0.0.2 metric 6 # 6 is a lower metric than the regular default gateway

echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o tun0 -j MASQUERADE
iptables -P FORWARD ACCEPT

# This is Psiren over IPv6
(su marc -c "ssh -f -N -v marc@2a03:9da0:4:3c::2  -D 0.0.0.0:8080")
(su tun2socks -c "badvpn-tun2socks --tundev tun0 --netif-ipaddr 10.0.0.2 --netif-netmask 255.255.255.0 --socks-server-addr 127.0.0.1:8080 --udpgw-remote-server-addr 127.0.0.1:7300 > /var/log/tun2socks.log") &

exit 0

And on Psiren:

• /home/marc/badvpn-master/udpgw --listen-addr 127.0.0.1:7300