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Moved wireguard from the interfaces to vpn directory, as it is a VPN.

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Modified the index files to reflect this.
 Added Diagram of the VPN Topology
 Modified the weird IP subnets for local& remote sites. This Included:
	Changing the Interface Address for the wg01 tunnel
	Chaning the WAN addresses to addrs not in the RFC1918 range (1.1.1.1 & 2.2.2.2)
	Modifing the allowed IPs and static route to reflect this.
	Modified the ping test to reflect this.
 Added an annotated verison of the wireguard local&remote config.
 Added an example of a firewall exception for wirguard (OUTSIDE_IN)
 Modified the explanation for the behavior of AllowedIPs for remote clients.
 Added an example of "sudo wg" to the operational commands.
 Fixed typo
This commit is contained in:
usman-umer 2021-07-10 23:42:23 +01:00
parent 4594823ebd
commit 5b407ed606
4 changed files with 124 additions and 39 deletions
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docs/_static/images/wireguard_vpn_diagram.jpg vendored Normal file
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1
docs/configuration/interfaces/index.rst
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@ -21,7 +21,6 @@ Interfaces
tunnel
vti
vxlan
wireguard
wireless
wwan

3
docs/configuration/vpn/index.rst
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@ -13,6 +13,7 @@ VPN
pptp
rsa-keys
sstp
wireguard
@ -23,4 +24,4 @@ pages to sort
:includehidden:
dmvpn
site2site_ipsec
site2site_ipsec

159
docs/configuration/interfaces/wireguard.rst → docs/configuration/vpn/wireguard.rst
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@ -1,7 +1,5 @@
.. _wireguard:
.. include:: /_include/need_improvement.txt
#########
WireGuard
#########
@ -10,10 +8,24 @@ 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.
*************
Diagram
*************
This diagram corresponds with the configuration below.
.. figure:: /_static/images/wireguard_vpn_diagram.jpg
*************
Configuration
*************
*************
Keypairs
*************
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.
@ -55,8 +67,9 @@ own keypairs.
vyos@vyos:~$ generate wireguard named-keypairs KP02
**************************
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,
@ -71,18 +84,31 @@ you want to tunnel (allowed-ips) to configure a WireGuard tunnel. The
public key below is always the public key from your peer, not your local
one.
**local side**
**local side - commands**
.. code-block:: none
set interfaces wireguard wg01 address '10.1.0.1/24'
set interfaces wireguard wg01 address '10.1.0.1/30'
set interfaces wireguard wg01 description 'VPN-to-wg02'
set interfaces wireguard wg01 peer to-wg02 allowed-ips '10.2.0.0/24'
set interfaces wireguard wg01 peer to-wg02 address '192.168.0.142'
set interfaces wireguard wg01 peer to-wg02 port '12345'
set interfaces wireguard wg01 peer to-wg02 allowed-ips '192.168.2.0/24'
set interfaces wireguard wg01 peer to-wg02 address '2.2.2.2'
set interfaces wireguard wg01 peer to-wg02 port '51820'
set interfaces wireguard wg01 peer to-wg02 pubkey 'XMrlPykaxhdAAiSjhtPlvi30NVkvLQliQuKP7AI7CyI='
set interfaces wireguard wg01 port '12345'
set protocols static route 10.2.0.0/24 interface wg01
set interfaces wireguard wg01 port '51820'
set protocols static route 192.168.2.0/24 interface wg01
**local side - annotated commands**
.. code-block:: none
set interfaces wireguard wg01 address '10.1.0.1/30' # Address of the wg01 tunnel interface.
set interfaces wireguard wg01 description 'VPN-to-wg02'
set interfaces wireguard wg01 peer to-wg02 allowed-ips '192.168.2.0/24'# Subnets that are allowed to travel over the tunnel
set interfaces wireguard wg01 peer to-wg02 address '2.2.2.2' # Public IP of the peer
set interfaces wireguard wg01 peer to-wg02 port '58120' # Port of the Peer
set interfaces wireguard wg01 peer to-wg02 pubkey '<pubkey>' # Public Key of the Peer
set interfaces wireguard wg01 port '51820' # Port of own server
set protocols static route 192.168.2.0/24 interface wg01 # Static route to remote subnet
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
@ -90,7 +116,7 @@ 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
WireGuard peers. This a a design decission. For more information please
WireGuard peers. This a a design decision. For more information please
check the `WireGuard mailing list`_.
.. cfgcmd:: set interfaces wireguard <interface> private-key <name>
@ -106,33 +132,70 @@ or allows the traffic.
public key, which needs to be shared with the peer.
**remote side**
**remote side - commands**
.. code-block:: none
set interfaces wireguard wg01 address '10.2.0.1/24'
set interfaces wireguard wg01 address '10.1.0.2/30'
set interfaces wireguard wg01 description 'VPN-to-wg01'
set interfaces wireguard wg01 peer to-wg02 allowed-ips '10.1.0.0/24'
set interfaces wireguard wg01 peer to-wg02 address '192.168.0.124'
set interfaces wireguard wg01 peer to-wg02 port '12345'
set interfaces wireguard wg01 peer to-wg02 allowed-ips '192.168.1.0/24'
set interfaces wireguard wg01 peer to-wg02 address '1.1.1.1'
set interfaces wireguard wg01 peer to-wg02 port '51820'
set interfaces wireguard wg01 peer to-wg02 pubkey 'u41jO3OF73Gq1WARMMFG7tOfk7+r8o8AzPxJ1FZRhzk='
set interfaces wireguard wg01 port '12345'
set protocols static route 10.1.0.0/24 interface wg01
set interfaces wireguard wg01 port '51820'
set protocols static route 192.168.1.0/24 interface wg01
Assure that your firewall rules allow the traffic, in which case you
have a working VPN using WireGuard.
**remote side - annotated commands**
.. code-block:: none
wg01# ping 10.2.0.1
PING 10.2.0.1 (10.2.0.1) 56(84) bytes of data.
64 bytes from 10.2.0.1: icmp_seq=1 ttl=64 time=1.16 ms
64 bytes from 10.2.0.1: icmp_seq=2 ttl=64 time=1.77 ms
set interfaces wireguard wg01 address '10.1.0.2/30' # Address of the wg01 tunnel interface.
set interfaces wireguard wg01 description 'VPN-to-wg01'
set interfaces wireguard wg01 peer to-wg02 allowed-ips '192.168.1.0/24'# Subnets that are allowed to travel over the tunnel
set interfaces wireguard wg01 peer to-wg02 address '1.1.1.1' # Public IP address of the Peer
set interfaces wireguard wg01 peer to-wg02 port '12345' # Port of the Peer
set interfaces wireguard wg01 peer to-wg02 pubkey '<pubkey>' # Public key of the Peer
set interfaces wireguard wg01 port '51820' # Port of own server
set protocols static route 192.168.1.0/24 interface wg01 # Static route remote subnet
wg02# ping 10.1.0.1
PING 10.1.0.1 (10.1.0.1) 56(84) bytes of data.
64 bytes from 10.1.0.1: icmp_seq=1 ttl=64 time=4.40 ms
64 bytes from 10.1.0.1: icmp_seq=2 ttl=64 time=1.02 ms
**************************
Firewall Exceptions
**************************
For the WireGuard traffic to pass through the WAN interface, you must create a firewall exception.
.. code-block:: none
set firewall name OUTSIDE_LOCAL rule 10 action accept
set firewall name OUTSIDE_LOCAL rule 10 description 'Allow established/related'
set firewall name OUTSIDE_LOCAL rule 10 state established enable
set firewall name OUTSIDE_LOCAL rule 10 state related enable
set firewall name OUTSIDE_LOCAL rule 20 action accept
set firewall name OUTSIDE_LOCAL rule 20 description WireGuard_IN
set firewall name OUTSIDE_LOCAL rule 20 destination port 51820
set firewall name OUTSIDE_LOCAL rule 20 log enable
set firewall name OUTSIDE_LOCAL rule 20 protocol udp
set firewall name OUTSIDE_LOCAL rule 20 source
You should also ensure that the OUTISDE_LOCAL firewall group is applied to the WAN interface and a direction (local).
.. code-block:: none
set interfaces ethernet eth0 firewall local name 'OUTSIDE-LOCAL'
Assure that your firewall rules allow the traffic, in which case you have a working VPN using WireGuard.
.. code-block:: none
wg01# ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=1.16 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=1.77 ms
wg02# ping 192.168.2.1
PING 192.168.2.1 (192.168.2.1) 56(84) bytes of data.
64 bytes from 192.168.2.1: icmp_seq=1 ttl=64 time=4.40 ms
64 bytes from 192.168.2.1: 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. This is optional.
@ -151,8 +214,10 @@ its content. Make sure you distribute the key in a safe manner,
wg01# set interfaces wireguard wg01 peer to-wg02 preshared-key 'rvVDOoc2IYEnV+k5p7TNAmHBMEGTHbPU8Qqg8c/sUqc='
wg02# set interfaces wireguard wg01 peer to-wg01 preshared-key 'rvVDOoc2IYEnV+k5p7TNAmHBMEGTHbPU8Qqg8c/sUqc='
Road Warrior Example
--------------------
*******************************
Mobile "RoadWarrior" Example
*******************************
With WireGuard, a Road Warrior VPN config is similar to a site-to-site
VPN. It just lacks the ``address`` and ``port`` statements.
@ -182,7 +247,7 @@ the peers. This allows the peers to interact with one another.
}
The following is the config for the iPhone peer above. It's important to
note that the ``AllowedIPs`` setting directs all IPv4 and IPv6 traffic
note that the ``AllowedIPs`` wildcard setting directs all IPv4 and IPv6 traffic
through the connection.
.. code-block:: none
@ -198,9 +263,9 @@ through the connection.
Endpoint = 192.0.2.1:2224
PersistentKeepalive = 25
This MacBook peer is doing split-tunneling, where only the subnets local
to the server go over the connection.
However, split-tunneling can be achieved by specifing the remote subnets.
This ensures that only traffic destined for the remote site is sent over the tunnel.
All other traffic is unaffected.
.. code-block:: none
@ -222,6 +287,24 @@ Operational Commands
Status
======
.. opcmd:: sudo wg
Show info about the Wireguard service.
Also shows the latest handshake.
.. code-block:: none
interface: wg0
public key:
private key: (hidden)
listening port: 51869
peer: <peer pubkey>
endpoint: <peer public IP>
allowed ips: 10.69.69.2/32
latest handshake: 23 hours, 45 minutes, 26 seconds ago
transfer: 1.26 MiB received, 6.47 MiB sent
.. opcmd:: show interfaces wireguard
Get a list of all wireguard interfaces
@ -252,8 +335,9 @@ Status
TX: bytes packets errors dropped carrier collisions
0 0 0 0 0 0
**************************
Encryption Keys
===============
**************************
.. opcmd:: show wireguard keypair pubkey <name>
@ -284,15 +368,16 @@ Encryption Keys
vyos@vyos:~$ delete wireguard keypair default
*******************************
Mobile "RoadWarrior" clients
============================
*******************************
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.
.. 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
party create and share 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.