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WireGuard: T1802: add mobile client config generation command

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(cherry picked from commit d24b81bed22231d6efc561604809e3dacf2aa0e5)
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Christian Poessinger 2021-04-24 18:13:11 +02:00
parent 3b426d01bb
commit c03f0c98d1
2 changed files with 111 additions and 68 deletions
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docs/configuration/interfaces/wireguard.rst
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@ -8,26 +8,27 @@ WireGuard is an extremely simple yet fast and modern VPN that utilizes
state-of-the-art cryptography. See https://www.wireguard.com for more
information.
*************
Configuration
=============
*************
WireGuard requires the generation of a keypair, a private key which will
decrypt incoming traffic and a public key, which the peer(s) will use to
encrypt traffic.
WireGuard requires the generation of a keypair, which includes a private
key to decrypt incoming traffic, and a public key for peer(s) to encrypt
traffic.
Generate keypair
----------------
Generate Keypair
================
.. opcmd:: generate wireguard default-keypair
It generates the keypair, that is its public and private part and stores
it within VyOS. It will be used per default on any configured WireGuard
interface, even if multiple interfaces are being configured.
It generates the keypair, which includes the public and private parts,
and stores it within VyOS. It will be used per default on any configured
WireGuard interface, even if multiple interfaces are being configured.
.. opcmd:: show wireguard keypairs pubkey default
It shows the public key which needs to be shared with your peer(s). Your
peer will encrypt all traffic to your system using this public key.
It shows the public key to be shared with your peer(s). Your peer will
encrypt all traffic to your system using this public key.
.. code-block:: none
@ -35,15 +36,14 @@ Generate keypair
hW17UxY7zeydJNPIyo3UtGnBHkzTK/NeBOrDSIU9Tx0=
Generate named keypair
----------------------
Generate Named Keypair
======================
Named keypairs can be used on a interface basis, if configured. If
Named keypairs can be used on a interface basis when configured. If
multiple WireGuard interfaces are being configured, each can have their
own keypairs.
The commands below will generate 2 keypairs, which are not related to
each other.
The commands below generates 2 keypairs unrelated to each other.
.. code-block:: none
@ -52,15 +52,15 @@ each other.
Interface configuration
-----------------------
=======================
The next step is to configure your local side as well as the policy
based trusted destination addresses. If you only initiate a connection,
the listen port and address/port is optional, if you however act as a server
and endpoints initiate the connections to your system, you need to
define a port your clients can connect to, otherwise it's randomly
chosen and may make it difficult with firewall rules, since the port may
be a different one when you reboot your system.
the listen port and address/port is optional; however, if you act as a
server and endpoints initiate the connections to your system, you need to
define a port your clients can connect to, otherwise the port is randomly
chosen and may make connection difficult with firewall rules, since the port
may be different each time the system is rebooted.
You will also need the public key of your peer as well as the network(s)
you want to tunnel (allowed-ips) to configure a WireGuard tunnel. The
@ -78,11 +78,11 @@ one.
set interfaces wireguard wg01 peer to-wg02 port '12345'
set interfaces wireguard wg01 peer to-wg02 pubkey 'XMrlPykaxhdAAiSjhtPlvi30NVkvLQliQuKP7AI7CyI='
set interfaces wireguard wg01 port '12345'
set protocols static interface-route 10.2.0.0/24 next-hop-interface wg01
set protocols static route 10.2.0.0/24 interface wg01
The last step is to define an interface route for 10.2.0.0/24 to get
through the WireGuard interface `wg01`. Multiple IPs or networks can be
defined and routed, the last check is allowed-ips which either prevents
defined and routed. The last check is allowed-ips which either prevents
or allows the traffic.
.. note:: You can not assign the same allowed-ips statement to multiple
@ -113,10 +113,10 @@ the public key, which needs to be shared with the peer.
set interfaces wireguard wg01 peer to-wg02 port '12345'
set interfaces wireguard wg01 peer to-wg02 pubkey 'u41jO3OF73Gq1WARMMFG7tOfk7+r8o8AzPxJ1FZRhzk='
set interfaces wireguard wg01 port '12345'
set protocols static interface-route 10.1.0.0/24 next-hop-interface wg01
set protocols static route 10.1.0.0/24 interface wg01
Assure that your firewall rules allow the traffic, in which case you
have a working VPN using WireGuard
have a working VPN using WireGuard.
.. code-block:: none
@ -131,16 +131,16 @@ have a working VPN using WireGuard
64 bytes from 10.1.0.1: icmp_seq=2 ttl=64 time=1.02 ms
An additional layer of symmetric-key crypto can be used on top of the
asymmetric crypto, which is optional.
asymmetric crypto. This is optional.
.. code-block:: none
wg01# run generate wireguard preshared-key
rvVDOoc2IYEnV+k5p7TNAmHBMEGTHbPU8Qqg8c/sUqc=
Copy the key, as it is not stored on the local file system. Make sure
you distribute that key in a safe manner, it's a symmetric key, so only
you and your peer should have knowledge of its content.
Copy the key, as it is not stored on the local filesystem. Because it
is a symmetric key, only you and your peer should have knowledge of
its content. Make sure you distribute the key in a safe manner,
.. code-block:: none
@ -154,7 +154,7 @@ With WireGuard, a Road Warrior VPN config is similar to a site-to-site
VPN. It just lacks the ``address`` and ``port`` statements.
In the following example, the IPs for the remote clients are defined in
the peers. This would allow the peers to interact with one another.
the peers. This allows the peers to interact with one another.
.. code-block:: none
@ -170,7 +170,7 @@ the peers. This would allow the peers to interact with one another.
}
peer iPhone {
allowed-ips 10.172.24.20/32
allowed-ips 2001:DB8:470:22::30/128
allowed-ips 2001:DB8:470:22::20/128
persistent-keepalive 15
pubkey BknHcLFo8nOo8Dwq2CjaC/TedchKQ0ebxC7GYn7Al00=
}
@ -211,59 +211,102 @@ to the server go over the connection.
PersistentKeepalive = 25
Operational commands
====================
********************
Operational Commands
********************
**Show interface status**
Status
======
.. code-block:: none
.. opcmd:: show interfaces wireguard
vyos@wg01# run show interfaces wireguard wg01
interface: wg1
description: VPN-to-wg01
address: 10.2.0.1/24
public key: RIbtUTCfgzNjnLNPQ/asldkfjhaERDFl2H/xUfbyjc=
Get a list of all wireguard interfaces
.. code-block:: none
Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down
Interface IP Address S/L Description
--------- ---------- --- -----------
wg0 10.0.0.1/24 u/u
.. opcmd:: show interfaces wireguard <interface>
Show general information about specific WireGuard interface
.. code-block:: none
vyos@vyos:~$ show interfaces wireguard wg01
interface: wg0
address: 10.0.0.1/24
public key: h1HkYlSuHdJN6Qv4Hz4bBzjGg5WUty+U1L7DJsZy1iE=
private key: (hidden)
listening port: 53665
peer: to-wg02
public key: u41jO3OF73Gq1WARMMFG7tOfk7+r8o8AzPxJ1FZRhzk=
latest handshake: 0:01:20
status: active
endpoint: 192.168.0.124:12345
allowed ips: 10.2.0.0/24
transfer: 42 GB received, 487 MB sent
persistent keepalive: every 15 seconds
RX:
bytes packets errors dropped overrun mcast
45252407916 31192260 0 244493 0 0
TX:
bytes packets errors dropped carrier collisions
511649780 5129601 24465 0 0 0
listening port: 41751
**Show public key of the default key**
RX: bytes packets errors dropped overrun mcast
0 0 0 0 0 0
TX: bytes packets errors dropped carrier collisions
0 0 0 0 0 0
.. code-block:: none
Encryption Keys
===============
vyos@wg01# run show wireguard keypair pubkey default
FAXCPb6EbTlSH5200J5zTopt9AYXneBthAySPBLbZwM=
.. opcmd:: show wireguard keypair pubkey <name>
**Show public key of a named key**
Show public key portion for specified key. This can be either the ``default``
key, or any other named key-pair.
.. code-block:: none
The ``default`` keypair
vyos@wg01# run show wireguard keypair pubkey KP01
HUtsu198toEnm1poGoRTyqkUKfKUdyh54f45dtcahDM=
.. code-block:: none
vyos@vyos:~$ show wireguard keypair pubkey default
FAXCPb6EbTlSH5200J5zTopt9AYXneBthAySPBLbZwM=
Name keypair ``KP01``
.. code-block:: none
vyos@vyos:~$ show wireguard keypair pubkey KP01
HUtsu198toEnm1poGoRTyqkUKfKUdyh54f45dtcahDM=
.. opcmd:: delete wireguard keypair pubkey <name>
Delete a keypair, this can be either the ``default`` key, or any other
named key-pair.
.. code-block:: none
vyos@vyos:~$ delete wireguard keypair default
**Delete wireguard keypairs**
Mobile "RoadWarrior" clients
============================
.. code-block:: none
Some users tend to connect their mobile devices using WireGuard to their VyOS
router. To ease deployment one can generate a "per mobile" configuration from
the VyOS CLI.
vyos@wg01# wireguard keypair default
.. warning:: From a security perspective it is not recommended to let a third
party create the private key for a secured connection. You should create the
private portion on your own and only hand out the public key. Please keep this
in mind when using this convenience feature.
.. opcmd:: generate wireguard mobile-config <interface> server <ip | fqdn> address <client ip>
Using this command you will create a client configuration which can connect to
``interface`` on this router. The public key from the specified interface is
automatically extracted and embedded into the configuration.
In addition you will specifiy the IP address or FQDN for the client where it
will connect to. The address parameter is used to assign a given client an
IPv4 or IPv6 address.
.. figure:: /_static/images/wireguard_qrcode.jpg
:alt: WireGuard Client QR code
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.. _`WireGuard mailing list`: https://lists.zx2c4.com/pipermail/wireguard/2018-December/003704.html
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