Wireguard

Links

• Wireguard-ui

Installation

apt install wireguard resolvconf

Zentrale einrichten

Scripts erstellen

FN_SCRIPT=/etc/wireguard/Build
cat <<'ESCRIPT' >$FN_SCRIPT
#! /bin/bash
WG_ID=$1

function Server(){
  source db/$WG_ID/server.conf
  cat <<EOS >$WG_ID.conf
[Interface]
Address = $IP_SERVER 
ListenPort = $PORT
PrivateKey = $PRIVATE_KEY

EOS
  echo "= created: $WG_ID.conf"
}

function Client(){
  local config=$1
  source $config
  local fn=$WG_ID.conf
  cat <<EOS >>$fn
[Peer]
# client $CLIENT
PublicKey = $PUB_KEY
AllowedIPs = $ALLOWED_IPS

EOS
}
function Usage(){
  echo "Usage: Build VPN_ID"
  echo "Example: Build wg0"
  echo "+++ $*"
}
if [ -z "$WG_ID" ]; then
  Usage "missing VPN_ID"
elif [ ! -d db/$WG_ID ]; then
  Usage "VPN_ID not defined: $WG_ID"
  echo "= available:"
  for dir in db/*; do
    test -d $dir/clients && echo $(basename $dir)
  done
else
  Server
  for client in db/$WG_ID/clients/*.conf; do
    Client $client
  done
fi
ESCRIPT
echo "created: $FN_SCRIPT"
chmod +x $FN_SCRIPT
# =======
FN_SCRIPT=/etc/wireguard/BuildServer
cat <<'SCRIPT' >$FN_SCRIPT
#! /bin/bash
WG_ID=$1
IP_SERVER=$2
HOST=$3
PORT=$4
test -z "$HOST" && HOST=$(hostname)
test -z "$PORT" && PORT=51820

function Usage(){
  echo "Usage BuildServer VPN_ID IP [HOST [PORT]]"
  echo "Example: BuildServer wg0 10.10.100.1/24 dragon 51820"
}

function Create(){
  mkdir -p db/$WG_ID/clients
  local fnPrivateKey=db/$WG_ID/private.key
  if [ ! -e $fnPrivateKey ]; then
    wg genkey > $fnPrivateKey
    chmod go= $fnPrivateKey
    echo "= created: $fnPrivateKey"
  fi
  local fnPublicKey=db/$WG_ID/public.key
  if [ ! -e $fnPublicKey ]; then
    wg <$fnPrivateKey pubkey >$fnPublicKey
    echo "= created: $fnPublicKey" 
  fi
  local fnConfig=db/$WG_ID/server.conf
  cat <<EOS >$fnConfig
WG_ID=$WG_ID
IP_SERVER=$IP_SERVER
PORT=$PORT
PRIVATE_KEY=$(cat $fnPrivateKey)
EOS
  echo "= created: $fnConfig"
}

if [ -z "$IP_SERVER" ]; then
  Usage "missing IP_SERVER"
elif [ ${1/\//} != $1 ]; then
  Usage "wrong IP_SERVER: $IP_SERVER"
else
  Create
fi
SCRIPT
chmod +x $FN_SCRIPT
echo "= created: $FN_SCRIPT"
# =======
FN_SCRIPT=/etc/wireguard/ImportClient
cat <<'SCRIPT' >$FN_SCRIPT
#! /bin/bash
WG_ID=$1
CLIENT=$2
PUBLIC_KEY=$3
IP_CLIENT=$4
ALLOWED_IPS=$5

function Usage(){
  echo "Usage: BuildClient VPN_ID CLIENT_NAME IP_CLIENT PUB_KEY ALLOWED_IDS"
  echo "Example: BuildClient wg0 joe 10.10.100.44/32 0fajdkafkdla02jiw902902= 10.10.100.0/24,10.10.101.0/24"
  echo "+++ $*"
}

function Create(){
  mkdir -p db/$WG_ID/clients
  local fnConfig=db/$WG_ID/clients/$CLIENT.conf
  cat <<EOS >$fnConfig
CLIENT=$CLIENT
PUB_KEY=$PUBLIC_KEY
ALLOWED_IPS=$ALLOWED_IPS
EOS
  echo "= created: $fnConfig"
}

if [ -z "$ALLOWED_IPS" ]; then
  Usage "missing arguments"
elif [ ! -d db/$WG_ID ]; then
  Usage "unknown VPN_ID: $WG_ID"
else
  Create
fi
SCRIPT
  chmod +x $FN_SCRIPT
  echo "= created: $FN_SCRIPT"

Konfiguration Server

cd /etc/wireguard
WG_ID=wg0
IP_SERVER=10.58.1.1/16
HOST=$(hostname)
PORT=51820
./BuildServer $WK_ID $IP_SERVER $HOST $PORT

Konfiguration existierender Client (Public Key bekannt)

WG_ID=wg0
CLIENT=joe
IP_CLIENT=10.58.1.10/32
PUB_KEY=0fajdkafkdla02jiw902902=
ALLOWED_IPS=10.58.1.0/24
./ImportClient $WG_ID $CLIENT $IP_CLIENT $PUB_KEY $ALLOWED_IPS

Erzeugen Client (Keys werden erzeugt)

cd /etc/wireguard
WG_ID=wg0
CLIENT=joe
IP_CLIENT=10.58.1.10/32
ALLOWED_IPS=10.58.1.0/24
./CreateClient $WG_ID $CLIENT $IP_CLIENT ALLOWED_IPS

Linux Client einrichten

apt install wireguard-tools

Script erzeugen

FN_SCRIPT=/etc/wireguard/Import
cat <<'SCRIPT' >$FN_SCRIPT
#! /bin/bash
CONFIG=$1

function Usage(){
  echo "Usage: Import IMPORT_FILE"
  echo "Example: Import db/wg0.joe.conf"
  echo "+++ $*"
}

function Create(){
  local fn=$1
  source $fn
  if [ -z "$VPN_ID" -o -z "$DNS_SERVER" -o -z "$IP_SERVER" -o -z "$IP_CLIENT" ]; then
    echo "+++ wrong import data in $fn: vpn: $VPN_ID dns: $DNS_SERVER ip: $IP_SERVER ipcl: $IP_CLIENT"
  elif [ -z "$PORT_SERVER" -o -z "$ALLOWED_IPS" ]; then
    echo "+++ wrong import data: port: $PORT_SERVER allowed: $ALLOWED_IPS"
  elif [ -z "$PRIV_KEY" -o -z "$PUB_KEY" -o -z "$PUBKEY_SERVER" ]; then
    echo "+++ wrong import data: pub: $PUB_KEY priv: $PRIV_KEY pub-sv: $PUBKEY_SERVER"
  else
    local fnPrivate=/etc/wireguard/db/$VPN_ID.private.key
    echo $PUB_KEY > db/$VPN_ID.public.key
    echo $PRIV_KEY > $fnPrivate
    chmod og= $fnPrivate 
    local config=/etc/wireguard/$VPN_ID.conf
    cat <<EOS >$config
[Interface]
Address = $IP_CLIENT
DNS = $DNS_SERVER
# Load your privatekey from file
PostUp = wg set %i private-key $fnPrivate
# Also ping the vpn server to ensure the tunnel is initialized
PostUp = ping -c1 $IP_SERVER

[Peer]
PublicKey = $PUBKEY_SERVER
Endpoint = $IP_SERVER:$PORT_SERVER
AllowedIPs = $ALLOWED_IPS
PersistentKeepalive = 15
EOS
    echo "= created: $config"
  fi
}
if [ -z "$CONFIG" ]; then
  Usage "Missing parameter CONFIG_FILE"
elif [ ! -e $CONFIG ]; then
  Usage "Missing configuration file $CONFIG"
else
  Create $CONFIG
fi
SCRIPT

Importieren der Daten

CONFIG=db/wg0.joe.conf
./Import $CONFIG