mirror of
https://github.com/opnsense/docs
synced 2024-10-30 21:20:20 +00:00
VPN: IPsec - add example (23.1)
This commit is contained in:
Ad Schellevis
parent
ac814e6b56
commit
19310b18bd
@ -1,5 +1,5 @@
|
||||
====================================
|
||||
IPsec VTI - Route based PSK setup
|
||||
IPsec - Route based (VTI) PSK setup
|
||||
====================================
|
||||
|
||||
This example utilises the new options available in OPNsense 23.1 to setup a site to site tunnel in routed mode
|
||||
@ -44,7 +44,7 @@ to peer both firewalls. We will create a tunnel network using :code:`192.168.123
|
||||
|
||||
|
||||
--------------------------------
|
||||
Preperations
|
||||
Preparations
|
||||
--------------------------------
|
||||
|
||||
.....................
|
||||
@ -91,8 +91,8 @@ Property site A site B
|
||||
======================= =================== ===================
|
||||
Name IPSEC10_GW IPSEC10_GW
|
||||
Interface IPSEC10 IPSEC10
|
||||
Address Family IPv4 IPv4
|
||||
IP address **192.168.123.2** **192.168.123.1**
|
||||
Address Family IPv4 IPv4
|
||||
IP address **192.168.123.2** **192.168.123.1**
|
||||
======================= =================== ===================
|
||||
|
||||
|
||||
@ -114,6 +114,12 @@ Gateway IPSEC10_GW IPSEC10_GW
|
||||
======================= =================== ===================
|
||||
|
||||
|
||||
.....................
|
||||
Enable IPsec
|
||||
.....................
|
||||
|
||||
Before configuring the connections, we enable the IPsec module. Just mark the "enable" checkbox on the connections tab.
|
||||
|
||||
--------------------------------
|
||||
Setting up the IPsec connection
|
||||
--------------------------------
|
||||
|
||||
159
source/manual/how-tos/ipsec-s2s-conn.rst
Normal file
159
source/manual/how-tos/ipsec-s2s-conn.rst
Normal file
@ -0,0 +1,159 @@
|
||||
========================================
|
||||
IPsec - Policy based public key setup
|
||||
========================================
|
||||
|
||||
This example utilises the new options available in OPNsense 23.1 to setup a site to site tunnel in policy mode
|
||||
between two OPNsense machines using key pairs.
|
||||
|
||||
.. contents:: Index
|
||||
|
||||
--------------------------------
|
||||
Network topology
|
||||
--------------------------------
|
||||
|
||||
The schema below describes the situation we are implementing. Two networks (A,B) and a transit network (10.10.1.0/24)
|
||||
to peer both firewalls.
|
||||
|
||||
.. nwdiag::
|
||||
:scale: 100%
|
||||
|
||||
nwdiag {
|
||||
|
||||
span_width = 90;
|
||||
node_width = 180;
|
||||
network A {
|
||||
address = "10.1.0.0/24";
|
||||
pclana [label="PC Site A\n10.1.0.20",shape="cisco.pc"];
|
||||
fwa [shape = "cisco.firewall", address="10.1.0.1/24"];
|
||||
}
|
||||
network Ext {
|
||||
address = "10.10.1.0/24";
|
||||
label = "Ext";
|
||||
fwa [shape = "cisco.firewall", address="10.10.1.1/24"];
|
||||
fwb [shape = "cisco.firewall", address="10.10.1.2/24"];
|
||||
}
|
||||
network B {
|
||||
address = "192.168.1.0/24"
|
||||
fwb [shape = "cisco.firewall", address="192.168.1.20"];
|
||||
pclanb [label="PC Site B\n192.168.1.20",shape="cisco.pc"];
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
--------------------------------
|
||||
Preparations
|
||||
--------------------------------
|
||||
|
||||
Since our policy based setup doesn't require interfaces, gateways and routes, we only need to make sure the IPsec
|
||||
module is enabled on the Connections tab and Key pairs are registered for both hosts.
|
||||
|
||||
..................................
|
||||
Key pairs
|
||||
..................................
|
||||
|
||||
Go to the :menuselection:`VPN->IPsec->Key Pairs` option in the menu and create a new key on both hosts, then copy the public part
|
||||
from Site A to Site B and vise versa. Keys may easily be generated with the gear button in the Key type field.
|
||||
|
||||
|
||||
--------------------------------
|
||||
Setting up the IPsec connection
|
||||
--------------------------------
|
||||
|
||||
In order to setup a simple (and common) IPsec connection, we go to :menuselection:`VPN->IPsec->Connections` and add
|
||||
a new entry.
|
||||
|
||||
|
||||
.....................
|
||||
General settings
|
||||
.....................
|
||||
|
||||
Side by side the following general settings need to be set in this case, which configures the first part of the security association between
|
||||
both sites:
|
||||
|
||||
===============================================================
|
||||
|
||||
======================= =================== ===================
|
||||
Property site A site B
|
||||
======================= =================== ===================
|
||||
Local addresses **10.10.1.1** **10.10.1.2**
|
||||
Remote addresses **10.10.1.2** **10.10.1.1**
|
||||
======================= =================== ===================
|
||||
|
||||
Press <save> to go to the next step.
|
||||
|
||||
.. Note::
|
||||
|
||||
One may omit the local address if any address may be used to initiate the connection from, other valid options
|
||||
are also mentioned in the help text of the attribute.
|
||||
|
||||
|
||||
.....................
|
||||
Authentication
|
||||
.....................
|
||||
|
||||
Next we will need to add local authentication (add a new record in the local grid):
|
||||
|
||||
===============================================================
|
||||
|
||||
======================= =================== ===================
|
||||
Property site A site B
|
||||
======================= =================== ===================
|
||||
Authentication Public Key Public Key
|
||||
Id **hostA** **hostB**
|
||||
Public Keys **hostA-key** **hostB-key**
|
||||
======================= =================== ===================
|
||||
|
||||
Then we need to set Pre-Shared Key for remote authentication as well:
|
||||
|
||||
===============================================================
|
||||
|
||||
======================= =================== ===================
|
||||
Property site A site B
|
||||
======================= =================== ===================
|
||||
Authentication Public Key Public Key
|
||||
Id **hostB** **hostA**
|
||||
Public Keys **hostB-key** **hostA-key**
|
||||
======================= =================== ===================
|
||||
|
||||
|
||||
.. Note::
|
||||
|
||||
On host A the private key for Host A should be known and only the public key of Host B, Host B is exactly the oposite.
|
||||
|
||||
|
||||
.....................
|
||||
Children
|
||||
.....................
|
||||
|
||||
Finally we may add a child which will add security policies and kernel routes.
|
||||
|
||||
|
||||
======================= =================== ===================
|
||||
Property site A site B
|
||||
======================= =================== ===================
|
||||
Mode Tunnel Tunnel
|
||||
Policies [checked] [checked]
|
||||
Local **192.168.1.0/24** **10.0.1.0/24**
|
||||
Remote **10.0.1.0/24** **192.168.1.0/24**
|
||||
======================= =================== ===================
|
||||
|
||||
.....................
|
||||
Save and apply
|
||||
.....................
|
||||
|
||||
Finally save the settings and hit apply on the connections page to establish the tunnel.
|
||||
|
||||
--------------------------------
|
||||
Validate
|
||||
--------------------------------
|
||||
|
||||
Now can check if the tunnel is active on both side using the status overview in :menuselection:`VPN->IPsec->Status Overview`
|
||||
|
||||
--------------------------------
|
||||
Install firewall policies
|
||||
--------------------------------
|
||||
|
||||
With the tunnel active, all that remains is to accept traffic on this tunnel using the :menuselection:`Firewall->Rules->IPsec`
|
||||
menu option.
|
||||
@ -228,6 +228,7 @@ New > 23.1 (:menuselection:`VPN -> IPsec -> Connections`)
|
||||
:maxdepth: 2
|
||||
:titlesonly:
|
||||
|
||||
how-tos/ipsec-s2s-conn
|
||||
how-tos/ipsec-s2s-conn-route
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user