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Easy-wg-quick – Creates WireGuard configuration for hub and peers with ease

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easy-wg-lickety-split – Creates Wireguard configuration for hub and friends with ease

Getting Started

These directions will salvage you a duplicate of the challenge up and running in your
native machine. This machine (called hub) will act as VPN concentrator. All
varied friends connects to hub (as in a “road warrior” configuration).

Requirements

Install Wireguard in your running gadget on native machine, router,
VPS or container. This would perhaps presumably perchance presumably be your hub.

As dependences /bin/sh, wg, wg-lickety-split, awk, grep and ip instructions
would possibly perhaps presumably perchance presumably must serene be accessible on hub. If ip is now not accessible user is required to region
EXT_NET_IF and EXT_NET_IP variables in script to exterior network interface
name and IP address (or edit wghub.conf). Optionally qrencode can even fair even be veteran
to generate QR codes for cell applications.

Debian, Ubuntu

sudo honest install wireguard-tools mawk grep iproute2 qrencode

Fedora, RHEL, CentOS

sudo dnf install wireguard-tools gaze grep iproute qrencode

FreeBSD

sudo pkg install accept/wireguard graphics/libqrencode

Placing in Wireguard tools (and modules)

This script requires simplest tools installed, however to make exhaust of Wireguard module
(or user-set aside implementation) will be required. Detailed install files
for hundreds of running techniques is accessible at wireguard.com/install.

Associates also requires Wireguard installed. Android and iOS are supported.

Placing in

True download the script and originate it executable with chmod.

wget https://raw.githubusercontent.com/burghardt/easy-wg-lickety-split/grasp/easy-wg-lickety-split
chmod +x easy-wg-lickety-split

Unusual that it’s doubtless you’ll presumably perchance presumably exhaust a transient URL as correctly.

wget https://git.io/fjb5R -O easy-wg-lickety-split
chmod +x easy-wg-lickety-split

Or clone repository.

git clone https://github.com/burghardt/easy-wg-lickety-split.git

Usage

Script finish now not require any arguments. True slouch it and it will kind usable
Wireguard configuration for hub and one peer. Any sequential invocation creates
one other peer configuration within connected hub.

./easy-wg-lickety-split # 1st slouch creates hub configuration and one client
./easy-wg-lickety-split # any varied runs creates additional customers

Passing an argument to script creates configuration file with name in need to
sequence quantity to support remembering which config was for which machine.
Following relate will kind wgclient_client_name.conf file.

./easy-wg-lickety-split client_name

Pattern output

No seqno.txt... creating one!
No wgpsk.key... creating one!
No wghub.key... creating one!
No wghub.conf... creating one!
Wireguard hub address is 10.13.1.140: 51820 on wlp9s0.
Unusual: customise [Interface] piece of wghub.conf if required!

Unusual: passing argument to script creates client configuration with supplied
      name to support remembering which config was for which machine. In the occasion you
      did now not pass any argument it's doubtless you'll presumably perchance presumably serene rename created file manually
      with relate:
  mv -vi wgclient_10.conf wgclient_name.conf

No wgclient_10.conf... creating one!
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Scan QR code along with your cell phone or exhaust "wgclient_10.conf" file.
Updating wghub.conf... accomplished!

Crucial: Deploy updated wghub.conf configuration to wireguard with wg-lickety-split:
  sudo wg-lickety-split down ./wghub.conf # if already configured
  sudo wg-lickety-split up ./wghub.conf
  sudo wg relate # to envision popularity

The exhaust of generated configuration

On hub configure Wireguard.

sudo wg-lickety-split up ./wghub.conf

On peer scan QR code or duplicate wgclient_10.conf. To display QR code yet again exhaust

qrencode -t ansiutf8 < wgclient_10.conf

Finally on hub check if everything works with sudo wg show.

interface: wghub
  public key: kbaG3HxSDz3xhqiTNXlo1fZkFa+V6oTl+w0cSAQKxwQ=
  private key: (hidden)
  listening port: 51820

peer: th8qYu0R0mgio2wPu1kz6/5OOgi6l8iy7OobK590LHw=
  preshared key: (hidden)
  endpoint: 10.60.1.150: 37218
  allowed ips: 10.127.0.10/32
  latest handshake: 50 minutes, 22 seconds ago
  transfer: 32.64 MiB received, 95.24 MiB sent

Fine tunning

Disabling external interface autodetection

By default easy-wg-quick use interface with default routing done over it as
external network interface of VPN hub. If autodetection fails or generation of
configuration is done outside the hub (i.e. on air gapped laptop) user can
set interface name in extnetif.txt file with command:

echo vtnet0 > extnetif.txt

Disabling exterior IP address autodetection

By default easy-wg-lickety-split uses IP address of interface that has default
routing accomplished over it as exterior IP address of VPN hub. This can even fair now not be appropriate
if hub is behind firewall or NAT/PAT/masquarading is accomplished. User can region
prefered IP address in extnetip.txt file with relate:

echo 192.168.1.2 > extnetip.txt

In case of NAT/PAT/masquarading one can strive to make exhaust of provider esteem ifconfig.co
for autodetection:

curl ifconfig.co/ip > extnetip.txt

Disabling random port assignment

By default easy-wg-lickety-split exhaust random port quantity from fluctuate 1025-65535. When
the exhaust of static port quantity is required for firewall configuration or varied
causes user can region most widespread port quantity (80 in this case) in portno.txt
file with relate:

echo 80 > portno.txt

Disabling randomly generated inner network addresses

By default easy-wg-lickety-split exhaust randomly generated inner network addresses
for every IPv4 and IPv6. Custom-made network addresses can even fair even be region with the next
instructions.

echo "10.1.1."               > intnetaddress.txt   # for IPv4
echo "fd90:d175:8e43: 705d::" > intnet6address.txt  # for IPv6

Default masks are /24 for IPv4 and /64 for IPv6.

Environment network masks

To interchange default masks region unique masks in files named intnetmask.txt (IPv4)
and intnet6mask.txt (IPv6).

echo 172.16.0. > intnetaddress.txt
echo /16       > intnetmask.txt
echo fd9d: 9648: 0841:0c6e:3d28: 94d9:: > intnet6address.txt
echo /112                            > intnet6mask.txt

Environment custom DNS

Environment IPv4 resolver address

By default easy-wg-lickety-split uses 1.1.1.1 as or now not it's inner DNS. You would possibly perhaps well presumably perchance presumably exhaust the
relate under to succor a custom IPv4 DNS to customers.

echo 8.8.8.8 > intnetdns.txt

Environment IPv6 resolver address

By default easy-wg-lickety-split uses 2606: 4700: 4700:: 1111 as or now not it's inner DNS. You
can exhaust the relate under to succor a custom IPv6 DNS to customers.

echo 2001: 4860: 4860:: 8888 > intnet6dns.txt

Picking firewall kind

Firewall kind is guessed from running gadget. For Linux iptables and
ip6tables are veteran. For FreeBSD total pf NAT principles are implemented.
File fwtype.txt comprises name of firewall kind. To override autodetection
or disable any principles slouch one in every of the next instructions:

echo iptables  > fwtype.txt  # to grab Linux netfilter
echo firewalld > fwtype.txt  # to grab [firewalld]
echo pf        > fwtype.txt  # to grab OpenBSD PF
echo custom    > fwtype.txt  # to contain predefined instructions from file
echo none      > fwtype.txt  # to skip any setup at some stage in wg-lickety-split up/down

If fwtype.txt comprises note custom divulge of instructions.txt is incorporated
within the wghub.conf file.

Format of instructions.txt is:

PostUp = echo "relate 1"
PostUp = echo "relate 2"
PostUp = ...

PostDown = echo "relate 1"
PostDown = secho "relate 2"
PostDown = ...

Picking if PostUp/PostDown would possibly perhaps presumably perchance presumably must serene enable/disable IP forwarding

Sysctl relate syntax is guessed from running gadget. Linux and FreeBSD
are supported. As enabling IP forwarding is required for hub to forward VPN
traffic to the Internet it's managed by PostUp/PostDown settings by default.
Some utility (i.e. Docker) can even require that IP forwarding is by no methodology
disabled. In that case atmosphere none in sysctltype.txt and managing IP
forwarding settings in different places would possibly perhaps presumably perchance presumably be required.

File sysctltype.txt comprises name of sysctl kind. To override autodetection
or disable any instructions from being slouch exhaust one in every of the next instructions:

echo linux   > sysctltype.txt  # to grab Linux sysctl relate
echo freebsd > sysctltype.txt  # to grab FreeBSD sysctl relate
echo none    > sysctltype.txt  # to skip any setup at some stage in wg-lickety-split up/down

Enabling IPv6

If a global unicast IPv6 address is detected on server tunnels will be created
with inner IPv6 addresses distributed. This permits hub's customers to join over
hub's IPv6 NAT to IPv6 network.

If a global unicast IPv6 address is now not detected, the existence of a file
named forceipv6.txt can forcibly enable IPv6 red meat up.

contact forceipv6.txt

To exhaust outer IPv6 addresses (i.e. join client to hub over IPv6) factual region
EXT_NET_IF and EXT_NET_IP variables in script to exterior network interface
name and IPv6 address (or edit wghub.conf).

Enabling NDP proxy (in need to default IPv6 masquerading)

By default easy-wg-lickety-split uses IPv6 masquerading to provide IPv6 connectivity
to friends. Here's more uncomplicated to setup and require simplest single IPv6 global unicast
address to work. On the a entire lot of hand network address translation (NAT) has
disorders and barriers.

Neighbor Discovery Proxies (ND Proxy, NDP Proxy) permits kill-to-kill
connectivity
, however requires /64 network to be assigned to hub. From this /64
network, a subnetwork has to be divided (i.e. /112) and assigned to Wireguard
interface.

To enable proxied NDP kind file named ipv6mode.txt with proxy_ndp string.

echo proxy_ndp > ipv6mode.txt

When hub has 2001: 19f0:6c01:1c0d/64 assigned, phase of it would possibly perhaps even fair even be assigned to
Wireguard interface (i.e. 2001: 19f0:6c01:1c0d: 40/112).

echo 2001: 19f0:6c01:1c0d: 40:: > intnet6address.txt
echo /112 > intnet6mask.txt

Please imprint that NDP proxy mode in easy-wg-lickety-split is supported simplest on Linux.

Redirecting DNS

DNS redirection would possibly perhaps presumably perchance presumably be required to combine with products and services esteem Pi-gap or
Cloudflare DNS over TLS. This would perhaps presumably perchance presumably be performed by the exhaust of port 53 UDP/TCP
redirection in wghub.conf.

PostUp = iptables -t nat -A PREROUTING -i %i -p udp -m udp --dport 53 -j DNAT --to-vacation set aside 1.1.1.1: 53
PostUp = iptables -t nat -A PREROUTING -i %i -p tcp -m tcp --dport 53 -j DNAT --to-vacation set aside 1.1.1.1: 53
PostDown = iptables -t nat -D PREROUTING -i %i -p udp -m udp --dport 53 -j DNAT --to-vacation set aside 1.1.1.1: 53
PostDown = iptables -t nat -D PREROUTING -i %i -p tcp -m tcp --dport 53 -j DNAT --to-vacation set aside 1.1.1.1: 53

When the exhaust of IPv6 connected principles would possibly perhaps presumably perchance presumably must serene be region independently with ip6tables.

PostUp = ip6tables -t nat -A PREROUTING -i %i -p udp -m udp --dport 53 -j DNAT --to-vacation set aside 2606: 4700: 4700:: 1111: 53
PostUp = ip6tables -t nat -A PREROUTING -i %i -p tcp -m tcp --dport 53 -j DNAT --to-vacation set aside 2606: 4700: 4700:: 1111: 53
PostDown = ip6tables -t nat -D PREROUTING -i %i -p udp -m udp --dport 53 -j DNAT --to-vacation set aside 2606: 4700: 4700:: 1111: 53
PostDown = ip6tables -t nat -D PREROUTING -i %i -p tcp -m tcp --dport 53 -j DNAT --to-vacation set aside 2606: 4700: 4700:: 1111: 53

Persisting configuration with systemd

Systemd can even fair load configuration for every hub and customers the exhaust of
wg-lickety-split.provider. Unusual that also native red meat up for atmosphere up Wireguard
interfaces exists (since model 237).

sudo cp wghub.conf /and so on/wireguard/wghub.conf
sudo systemctl enable wg-lickety-split@wghub
sudo systemctl open wg-lickety-split@wghub
systemctl popularity wg-lickety-split@wghub

License

This challenge is licensed under the GPLv2 License - look the LICENSE file for
major substances.

Acknowledgments

OpenVPN's easy-rsa was an inspiration for penning this script.

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