Most probably use a 10.0.0.0/24 or something similar. The tunnel network can be any network in the private range, expressed in CIDR notation. The next section lets us decide on some network settings. Not every machine will have hardware crypto, but most processors even halfway modern should offer something. I would use at least the default, which is plenty secure for home use. The encryption and digest algorithms are personal preference. We want to let it generate its own TLS key. The next portion, cryptographic settings, is key. VPN servers usually prefer UDP because it can be a bit faster UDP port 1194 is traditional, but any open port or protocol will work. WAN we do need to use, the others can be changed. Here are some explanations: Interface: WANĭescription: OpenVPN-to-home (or something descriptive) Now we get into the meat of the configuration:Īgain we can use mostly default configurations. On the next step, select the CA created above and in the next, the server certificate. This just means that the credentials database is stored locally on the firewall, in oppose to another server. In VPN -> OpenVPN, there’s a Wizards tab. PfSense has a handy wizard to help us set the server up. The Certificate Authority will be the one we just created. Again, we’ll keep most of the default settings, adding a descriptive name. Move over to the Certificates tab, and add a new one. The personal information at the bottom is 100% optional and probably not needed. We can leave basically everything else default. I personally think sha512 is probably kind of paranoid, but it’s up to you. Higher than that is more secure, but more taxing on a CPU. The Digest Algorithm is probably most important, determining how heavily encrypted our data will be. The default should be “Create an Internal Certificate Authority”. All this really means is that it will verify and authenticate clients for us – an extra layer of security on top of a strong password. Creating our Certificate Authorityīecause our firewall itself will be the VPN server, it will also act as its own Certificate Authority (CA). In our case today we’re using option one, because our goal is to access resources remotely, not privacy or obfuscation. If we chose option two, we would still have remote access to our home network, but it would also force all other traffic requests not on that network through the tunnel and then out of the Firewall’s WAN, making the remote client’s IP appear as if it originated from your home. In other words, all traffic bound for the internet at large will not use the tunnel. Perhaps it wants files from our server, or to check the status of a VM or container.īut if we ask it for google results, or the latest news from AP, it will use it’s regular WAN connection and 100.50.2.24 address to fetch that information. If we choose option one and form a VPN tunnel with our server, it will only send traffic to our firewall when bound for our private 192.168.1.0 network. The second method routes all traffic regardless of destination through the VPN server, making it effectively a proxy as well. This is the option you’d use if all you wanted to do is reach those internal resources and servers, and masking your IP is not a concern. Route all traffic through the VPN server.Route only internal network requests through VPN, and all others to internet.There are at least two ways a VPN server can work: The firewall can also utilize extra security features like intrusion detection and prevention, and since we are leaving a remote access port facing the internet no matter what, that’s very important. What’s the advantage of having a server on the firewall? Mainly that it limits the steps we must take to remote into a home network, the ports that need forwarding, and the extra legwork of reaching your internal network. In this guide we’re going to setup a server on our firewall, pfSense, that we can remote into directly. The counterpart of the VPN Client, a VPN server allows us to remote into our home network securely, allowing us access, monitor, and troubleshoot from anywhere in the world. What’s a VPN Server and why do I need one?
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