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PoC with Re6st

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Signed-off-by: Yohann D'ANELLO <ynerant@crans.org>
This commit is contained in:
Yohann D'ANELLO 2021-06-14 16:14:14 +02:00
parent af9649d1ce
commit cb8e699bb0
Signed by: ynerant
GPG Key ID: 3A75C55819C8CF85
3 changed files with 71 additions and 35 deletions
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4
.gitignore vendored Normal file
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@ -0,0 +1,4 @@
certs/
log/
run/
states/

1
firewall/restrict-http.conf
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@ -8,7 +8,6 @@ table inet filter {
}
chain forward {
type filter hook forward priority 0; policy accept
tcp dport { 80 } reject;
accept
}
chain output {

81
start.sh
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@ -20,86 +20,119 @@ tmux rename-window host
function reset() {
echo "Reset previous configuration..."
pkill -e vde_plug
pkill -e babeld
rm -rv /tmp/switch* /tmp/ns*
pkill -KILL -e re6stnet
pkill -e vde_plug
rm -r run/*
rm -rv $dir/switches
ip route delete 172.17.0.0/16
nft flush ruleset
}
reset
echo "Generate registry certificates..."
mkdir -p $dir/certs/registry
[[ -f $dir/certs/registry/dh4096.pem ]] || openssl dhparam -out $dir/certs/registry/dh4096.pem 4096
[[ -f $dir/certs/registry/ca.key ]] || openssl genpkey -out $dir/certs/registry/ca.key -algorithm rsa -pkeyopt rsa_keygen_bits:4096
[[ -f $dir/certs/registry/ca.crt ]] || openssl req -nodes -new -x509 -key $dir/certs/registry/ca.key -set_serial 0x12a0c07003012000300040001 -days 36500 -out $dir/certs/registry/ca.crt
echo "Setup switches..."
vde_plug --daemon switch:///tmp/ext null://
vde_plug --daemon switch:///tmp/switch1 null://
vde_plug --daemon switch:///tmp/switch2 null://
mkdir switches
vde_plug --daemon switch://$dir/switches/ext null://
vde_plug --daemon switch://$dir/switches/switch1 null://
vde_plug --daemon switch://$dir/switches/switch2 null://
# Connect to the exterior
sudo vde_plug --daemon vde:///tmp/ext tap://vde0
sudo vde_plug --daemon vde://$dir/switches/ext tap://vde0
sudo ip link set dev vde0 address 02:00:00:00:00:00
sudo ip link set dev vde0 up
sudo ip address add 10.2.1.1/30 dev vde0
sleep 1
# Setup NAT
nft -f $dir/firewall/nat.conf
echo "Configure re6st registry..."
mkdir -p $dir/states/host $dir/certs/host $dir/log/host $dir/run
tmux split-window -t host -h re6st-registry --dh $dir/certs/registry/dh4096.pem --ca $dir/certs/registry/ca.crt --key $dir/certs/registry/ca.key --db $dir/states/host/registry.db --logfile $dir/log/host/registry.log --run $dir/run/registry.pid -4 10.2.1.1 -6 ::1 --prefix-length 16
sleep 1
if ! [[ -f $dir/certs/host/cert.crt ]]; then
echo "Generating certificates for host..."
sqlite3 $dir/states/host/registry.db "INSERT INTO token VALUES(\"token\", \"ynerant@ynerant.fr\", 16, 1)"
sleep 1
re6st-conf --registry http://10.2.1.1 --dir $dir/certs/host --email ynerant@ynerant.fr --token token
sleep 15
fi
tmux split-window -t host bash
tmux send-keys -t host "re6stnet --registry http://10.2.1.1 --ip 10.2.1.1 --ca $dir/certs/host/ca.crt --cert $dir/certs/host/cert.crt --key $dir/certs/host/cert.key --state $dir/states/host --log $dir/log/host --run $dir/run/re6stnet-host.pid --gateway" Enter
tmux select-pane -t host -L
for i in 1 2 3 4; do
echo "Creating new namespace..."
mkdir -p /tmp/ns$i/log
tmux new-window -n ns$i "unshare --user --map-root-user --net --mount"
tmux new-window -n ns$i "unshare --net --mount"
tmux select-window -t host
sleep 1
echo "Configure ns$i..."
tmux send-keys -t ns$i "echo \$\$ > /tmp/ns$i/pid" Enter
tmux send-keys -t ns$i "echo \$\$ > $dir/run/node$i.pid" Enter
if [[ $i -eq 1 ]]; then
tmux send-keys -t ns$i "vde_plug --daemon vde:///tmp/ext tap://vde0" Enter
tmux send-keys -t ns$i "vde_plug --daemon vde://$dir/switches/ext tap://vde0" Enter
sleep 0.3
tmux send-keys -t ns$i "ip link set dev vde0 address 02:00:00:00:00:01" Enter
tmux send-keys -t ns$i "ip link set dev vde0 up" Enter
tmux send-keys -t ns$i "ip address add 10.2.1.2/30 dev vde0" Enter
tmux send-keys -t ns$i "ip route add default via 10.2.1.1 dev vde0 proto kernel" Enter
tmux send-keys -t ns$i "echo \"interface vde0 type wired\" >> /tmp/ns$i/babeld.conf" Enter
tmux send-keys -t ns$i "echo \"redistribute metric 256\" >> /tmp/ns$i/babeld.conf" Enter
fi
tmux send-keys -t ns$i "mount --bind /tmp/ns$i/log /var/log" Enter
done
echo "Enable links..."
# Switch 1: NS 1, 2, 3
for i in 1 2 3; do
tmux send-keys -t ns$i "vde_plug --daemon vde:///tmp/switch1 tap://vde1" Enter
tmux send-keys -t ns$i "vde_plug --daemon vde://$dir/switches/switch1 tap://vde1" Enter
sleep 0.3
tmux send-keys -t ns$i "ip link set dev vde1 address 02:00:00:00:01:0$i" Enter
tmux send-keys -t ns$i "ip link set dev vde1 up" Enter
tmux send-keys -t ns$i "ip address add 172.17.1.$i/32 dev vde1" Enter
tmux send-keys -t ns$i "echo \"interface vde1 type wired\" >> /tmp/ns$i/babeld.conf" Enter
tmux send-keys -t ns$i "ip address add 172.17.1.$i/24 dev vde1" Enter
tmux send-keys -t ns$i "ip route add 10.2.1.0/24 via 172.17.1.1 dev vde1 proto kernel" Enter
done
# Switch 2: NS 2, 3, 4
for i in 2 3 4; do
tmux send-keys -t ns$i "vde_plug --daemon vde:///tmp/switch2 tap://vde2" Enter
tmux send-keys -t ns$i "vde_plug --daemon vde://$dir/switches/switch2 tap://vde2" Enter
sleep 0.3
tmux send-keys -t ns$i "ip link set dev vde2 address 02:00:00:00:02:0$i" Enter
tmux send-keys -t ns$i "ip link set dev vde2 up" Enter
tmux send-keys -t ns$i "ip address add 172.17.2.$i/32 dev vde2" Enter
tmux send-keys -t ns$i "echo \"interface vde2 type wired\" >> /tmp/ns$i/babeld.conf" Enter
tmux send-keys -t ns$i "ip address add 172.17.2.$i/24 dev vde2" Enter
done
tmux send-keys -t ns4 "ip route add 172.17.1.0/24 via 172.17.2.2 dev vde2 proto kernel" Enter
tmux send-keys -t ns4 "ip route add 172.17.1.0/24 via 172.17.2.3 dev vde2 proto kernel" Enter
tmux send-keys -t ns4 "ip route add 10.2.1.0/24 via 172.17.2.2 dev vde2 proto kernel" Enter
tmux send-keys -t ns4 "ip route add 10.2.1.0/24 via 172.17.2.3 dev vde2 proto kernel" Enter
tmux send-keys -t ns1 "ip route add 172.17.2.0/24 via 172.17.1.2 dev vde1 proto kernel" Enter
ip route add 172.17.0.0/16 via 10.2.1.2
# Restrict HTTP transport on node 2
tmux send-keys -t ns2 "nft -f $dir/firewall/restrict-http.conf" Enter
# Put a higher metric for node 3, to enforce babel to choose node 2
echo "in neigh fe80::ff:fe00:202 metric 512" > /tmp/ns4/babeld.conf
for i in 1 2 3 4; do
tmux send-keys -t ns$i "touch /etc/babeld.conf && mount --bind /tmp/ns$i/babeld.conf /etc/babeld.conf" Enter
tmux send-keys -t ns$i "babeld -D -I /tmp/ns$i/babeld.pid -G /tmp/ns$i/socket -S /tmp/ns1/state" Enter
mkdir -p $dir/certs/node$i $dir/states/node$i
if ! [[ -f $dir/certs/node$i/cert.crt ]]; then
echo "Generating certificates for node $i..."
sqlite3 $dir/states/host/registry.db "INSERT INTO token VALUES(\"token\", \"ynerant@ynerant.fr\", 16, 1)"
sleep 1
re6st-conf --registry http://10.2.1.1 --dir $dir/certs/node$i --email ynerant@ynerant.fr --token token
sleep 15
fi
tmux split-window -h -t ns$i nsenter -t `cat $dir/run/node$i.pid` --mount --net
subnet=1
if [[ $i == 4 ]]; then subnet=2; fi
tmux send-keys -t ns$i "re6stnet --registry http://10.2.1.1 --ip 172.17.$subnet.$i --ca $dir/certs/node$i/ca.crt --cert $dir/certs/node$i/cert.crt --key $dir/certs/node$i/cert.key --state $dir/states/node$i --log $dir/log/node$i --run $dir/run/re6stnet-node$i.pid --default" Enter
tmux select-pane -t ns$i -L
done
bash