1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
.. _wireguard:
WireGuard VPN Interface
-----------------------
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.
Generate a keypair
~~~~~~~~~~~~~~~~~~
Generate the keypair, which creates a 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.
.. code-block:: sh
wg01:~$ configure
wg01# run generate wireguard keypair
The public key is being shared with your peer(s), your peer will encrypt all
traffic to your system using this public key.
.. code-block:: sh
wg01# run show wireguard pubkey
u41jO3OF73Gq1WARMMFG7tOfk7+r8o8AzPxJ1FZRhzk=
Generate named keypairs
~~~~~~~~~~~~~~~~~~~~~~~
Named keypairs can be used on a interface basis, if 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.
.. code-block:: sh
wg01:~$ configure
wg01# run generate wireguard named-keypairs KP01
wg01# run generate wireguard named-keypairs KP02
Wireguard 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 endpoint 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.
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 public key
below is always the public key from your peer, not your local one.
**local side**
.. code-block:: sh
set interfaces wireguard wg01 address '10.1.0.1/24'
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 endpoint '192.168.0.142:12345'
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
.. note:: The `endpoint` must be an IP and not a fully qualified domain name (FQDN). Using a FQDN will result in unexpected behavior.
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 or allows the
traffic.
To use a named key on an interface, the option private-key needs to be set.
.. code-block:: sh
set interfaces wireguard wg01 private-key KP01
set interfaces wireguard wg02 private-key KP02
The command ``run show wireguard named-keypairs pubkey KP01`` will then show the public key,
which needs to be shared with the peer.
**remote side**
.. code-block:: sh
set interfaces wireguard wg01 address '10.2.0.1/24'
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 endpoint '192.168.0.124:12345'
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
Assure that your firewall rules allow the traffic, in which case you have a
working VPN using wireguard.
.. code-block:: sh
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
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
An additional layer of symmetric-key crypto can be used on top of the
asymmetric crypto, which is optional.
.. code-block:: sh
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.
.. code-block:: sh
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='
Operational commands
^^^^^^^^^^^^^^^^^^^^
**Show interface status**
.. code-block:: sh
vyos@wg01# run show interfaces wireguard wg01
interface: wg1
description: VPN-to-wg01
address: 10.2.0.1/24'
public key: RIbtUTCfgzNjnLNPQ/asldkfjhaERDFl2H/xUfbyjc=
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
**Show public key of the default key**
.. code-block:: sh
vyos@wg01# run show wireguard keypair pubkey default
FAXCPb6EbTlSH5200J5zTopt9AYXneBthAySPBLbZwM=
**Show public key of a named key**
.. code-block:: sh
vyos@wg01# run show wireguard keypair pubkey KP01
HUtsu198toEnm1poGoRTyqkUKfKUdyh54f45dtcahDM=
**Delete wireguard keypairs**
.. code-block:: sh
vyos@wg01# wireguard keypair default
|
