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Full Answer
Why choose pfSense and OpenVPN for remote access solutions?
It is necessary to be able to offer remote access solutions to its travelling or teleworking users. These accesses must be secure and reliable. Good news, pfSense and OpenVPN are the ideal solution for this need!
What is the shared secret on the pfSense firewall?
The Shared Secret is the password configured on the RADIUS server for accepting authentication requests from the IP address of the pfSense firewall. If there is an existing Certificate Authority defined on the pfSense firewall, it may be chosen from the list. To create a new Certificate Authority, choose Add new CA.
What is the default monitor IP for pfSense?
Monitor IP = 8.8.8.8 or use another reliable public DNS server This section makes uses of several aliases that were configured as part of my pfSense baseline guide. Allow access to LOCAL_SUBNETS only on approved ports ( Allowed_OUT_ports_LAN)
How do I change the certificate authority on the pfSense firewall?
If there is an existing Certificate Authority defined on the pfSense firewall, it may be chosen from the list. To create a new Certificate Authority, choose Add new CA.
What is allow all rule in OpenVPN?
A rule must also be added to the OpenVPN interface to pass traffic over the VPN from the Client-side LAN to the Server-side LAN. An “Allow all” style rule may be used, or a set of stricter rules. In this example allowing all traffic is OK so the following rule is made: Navigate to Firewall > Rules, OpenVPN tab.
What is remote access PKI?
With remote access PKI configurations, routes and other configuration options are not usually defined in the client configuration but rather they are pushed from the server to the client. If there are more networks to reach on the server side, configure them on the server to be pushed.
Can you leave the source set to any since multiple sites will need to connect?
Alternately, an alias can be made which contains the IP addresses of each remote site if they have static addresses.
Is SSL/TLS more complicated than shared key?
The process of configuring a site-to-site connection using SSL/TLS is more complicated than Shared Key. However, this method is typically much more convenient for managing a large number of remote sites connecting back to a central site in a hub-and-spoke fashion. It can be used for a site-to-site between two nodes, but given the increased configuration complexity, most people prefer to use shared key rather than SSL/TLS for that scenario.
How does VPN work?
How it works. The goal is to offer a VPN solution for travelling or teleworking users allowing them to have secure access to the company’s LAN. These users can use a computer or a smartphone to connect. In all cases, they will use an OpenVPN client.
How to add a certificate to a symlink?
Go in the “Certificates” tab, then click on the “+ Add/Sign” button at the bottom right of the list of existing certificates.
What is the default port for a local port?
Local port: we keep the default value (1194).
How to add a group to OpenVPN?
Go on “Groups” tab, then click on the “+ Add” button at the bottom right. Give the name you want to the group. In our case we choose “OpenVPN-users”. Then click on the “Save” button. Once done, come back on the “Users” tab, then click on the “+ Add” button. The fields to be filled in are the following:
Is OpenVPN compatible with Mac?
OpenVPN = the perfect solution for home-office users. OpenVPN is easy to implement and is compatible with all types of platforms (Windows, Mac, Android, iOS, …) This article does not cover site-to-site mode configuration of OpenVPN (shared key or X.509).
What is PFSense OpenVPN?
The PFSense OPENVPN client wizard automatically makes the routing for the WAN which is what is used in most setups as most organizations use one firewall. If you re-run the export wizard and if you made a change to the rule it will reset any changes you made to the WAN.
What is OpenVPN server mode?
The OpenVPN Server Mode allows selecting a choice between requiring Certificates, User Authentication, or both. The wizard defaults to Remote Access (SSL/TLS + User Auth). The possible values for this choice and their advantages are:
Why is my VPN working offline?
Once you connect to your VPN you will be working in offline mode because your not connected to the domain right away. If you click the work online on the client the DFS shares will come right up.
What is remote access authentication?
Remote Access (User Auth) Authentiation only, no certificates. Useful if the clients should not have individual certificates. Commonly used for external authentication (RADIUS, LDAP) All clients can use the same exported client configuration and/or software package.
Is PFSense a good firewall?
PFSense is a great firewall solution. It is flexible, easy to customize and comes with built in VLAN and VPN support. Now I am going to document this for setting up a User Authenticated Open VPN Server in PF using the local database that is in PFSENSE. This will have to be modified for larger organizations; but would be great for smaller and mid-range shops. This is the least secure way to set this up but is the easiest to setup.
How many concurrent connections are needed for DFS?
If you want access to DFS Shares though AD, you will want to push all traffic through the VPN. Check the Redirect Gateway. The default is 10 Concurrent Connections.
Is TLS key secure?
Most secure as there are multiple factors of authentication (TLS Key and Certificate that the user has, and the username/password they know)
How to provide secure access to OpenVPN?
To provide secure access through OpenVPN we need to provision a Certificate Authority (CA) and generate a suitable certificate. The CA issues and validates the certificates that will secure the VPN.
What port is OpenVPN on?
This section will configure a secure OpenVPN server running on port 443 rather than the default OpenVPN port of 1194. This reduces the likelihood of a remote network preventing access to your local infrastructure because port 1194 is not permitted or open.
How to remotely access a SOHO?
One solution to access these remotely is to open a number of firewall ports. An alternative and more secure method used is to open a single port and enable access through an OpenVPN connection. This guide will build upon the pfSense baseline guide and illustrate how to configure pfSense and an iOS device to enable secure remote access.
How to install OpenVPN client export?
Navigate to System > Packages > Available packages and click Install next to the OpenVPN-client-export to install the utility.
What is the local subnet alias?
The LOCAL_SUBNETS alias is used to identify internal and external networks. Verify the RW_VPN address range ( 192.168.200.0/24) is included in the alias so policy routing continues to function correctly. If you followed a later revision of my baseline guide, you may instead have a 192.168.0.0/16 entry, if so this already includes the `192.168.200.0/24 subnet.
What is NAT in VPN?
NAT is needed to convert private local IP addresses ( 192.168.200.0/24) to the global address space for broadcast on the internet. This section will illustrate how to configure this for our VPN_WAN gateway (or gateways if you have already followed my multiple-VPN failover guide).
How did Snowden try to enable surveillance?
Snowden documents suggested that the NSA actively tried to enable surveillance by embedding weaknesses in commercially-deployed technology including at least one NIST standard.
What is and what is the OpenVPN built into pfSense for?
OpenVPN is a software that allows us to build virtual private networks, we will have a control channel where the lifting of the tunnel and the negotiation of the encryption protocols will be managed, and we will have a data channel where all the tunnel traffic will be encrypted point to point .
Install the OpenVPN Client plugin to generate the configuration
Although OpenVPN is installed by default in pfSense, either in its server or client mode, we do not have a pre-installed package that allows us to automatically generate the configuration for the clients.
Create digital certificates in pfSense itself
To configure an OpenVPN server with “Remote access SSL / TLS” authentication, we must use digital certificates.
Configure OpenVPN server with all options explained
To configure the OpenVPN server, all we have to do is go to the main menu of pfSense, click on the “VPN” section and select ” OpenVPN “.
Configure the rules on the firewall to allow access
In the “Firewall / Rules” section we click on WAN, and create a rule with the following values:
Export the OpenVPN configuration file for clients
We go to the “VPN / OpenVPN / Client Export” section, here we will configure the extension to generate automatic configuration for clients:
Check the status of the service and connected clients
In the “Status / OpenVPN” section we can see if it is activated or not, we activate it and connect the first client without any problem.
