freie-netze wireguard access server

requirements

apt install wireguard wireguard-tools sqlite3 sqlite3-tools
# wireguard-dkms

wg --version
sqlite3 --version

modprobe ip_tables
#modprobe ip6_tables
modprobe wireguard

setup

as user

password=`tr -cd '[:alnum:]' < /dev/urandom | fold -w30 | head -n1`
privkey=`wg genkey`

mkdir -p /data/wg-access-server-data/
cat > /data/wg-access-server-data/config.yaml <<EOF
# https://www.freie-netze.org/wg-access-server/2-configuration/
loglevel: info
adminPassword: "$password"
storage: sqlite3:///data/db.sqlite3
wireguard:
  privateKey: "$privkey"

# the forwarders to proxy (possibly internal)
# defaults to existing nameservers
#dns:
#  upstream:
#    #- "INTERNAL-DNS-HERE"
#    - "208.67.222.222"
#    - "208.67.220.220"

vpn:
  # routing we are offering
  allowedIPs:
    - "10.0.0.0/8"
  # so that large corporation end-users won't attack each other
  clientIsolation: true

# delete after 6 months unused
enableInactiveDeviceDeletion: true
inactiveDeviceGracePeriod: 4380h
EOF

note latest won’t do as it takes some older release – choose master instead

docker rm -f wg-access-server docker run -d –name wg-access-server \ –cap-add NET_ADMIN –device /dev/net/tun:/dev/net/tun \ -v /data/wg-access-server-data:/data \ -e “WG_VPN_CIDRV6=0” \ -e “WG_CONFIG=/data/config.yaml” \ -p 127.0.0.1:8000:8000 \ -p 0.0.0.0:51820:51820/udp \ ghcr.io/freifunkmuc/wg-access-server:master docker logs wg-access-server docker exec -ti wg-access-server bash

^D ```

ssl offloading

vi /etc/dehydrated/domains-http01

wireguard.demo.nethence.com

dehydrated --cron --keep-going
dehydrated --cron --keep-going --algo prime256v1 --out /etc/dehydrated/certs/ECC

vi /etc/nginx/conf.d/wireguard.conf

...
    location / {
            proxy_pass http://127.0.0.1:8000/;
    }
...

nginx -t
nginx -s reload

ready to go

from a remote workstation

as root

curl -I https://wireguard.demo.nethence.com/signin

nmap -sU -p 51820 wireguard.demo.nethence.com

as user

https://wireguard.demo.nethence.com/signin

admin / $password

(add device)

add the config file system-wide

as root

mv -i ~USER/Downloads/WireGuard.conf /etc/wireguard/EXAMPLE.conf
vi /etc/wireguard/EXAMPLE.conf

(check AllowedIPs points to internal CIDR)

now reach the insider network

wg-quick up EXAMPLE
ifconfig EXAMPLE
ping -c3 10.44.0.1

and make sure your access to public network doesn’t go through the newly configured vpn access

traceroute opendns.com

additional notes

moar options

#adminUsername: SOME-USERNAME
#externalHost: wireguard.example.net

troubleshooting

http: proxy error: dial tcp 127.0.0.1:3000: connect: connection refused

==> looks like it’s calling the dev website internally ==> do NOT set WORKDIR

resources

https://www.freie-netze.org/wg-access-server/

https://www.freie-netze.org/wg-access-server/2-configuration/

https://www.freie-netze.org/wg-access-server/3-storage/

https://www.freie-netze.org/wg-access-server/deployment/1-docker/

https://github.com/freifunkMUC/wgkex/blob/main/docker-compose.yml

https://github.com/freifunkMUC/wg-access-server-chart/tags

https://github.com/freifunkMUC/wg-access-server-chart

https://pascal-bergeron.com/en/posts/docker-expose-ports-local-network/

https://stackoverflow.com/questions/29957143/make-docker-use-ipv4-for-port-binding ==> ipv4 only

https://denbeke.be/blog/software/configuring-wireguard-vpn-with-wg-access-server/ ==> cool guide