How to set up OpenVPN on pfSense 2.4.4 – Surfshark Customer Support

This tutorial will show you how to configure an OpenVPN tunnel on your pfSense 2.4.4 router.

To proceed, you need a router with pfSense firmware version 2.4.4 or higher and an active Surfshark subscription, which you can purchase on Surfshark's pricing page.

You will learn how to:

Get your credentials
Choose a Surfshark server
Configure the OpenVPN client
Ensure your connection is successful

Get your credentials

NOTE: These are not your regular credentials, such as your email and password.

Enter the Surfshark login page and log in. Then, click on VPN > Manual Setup > Router > OpenVPN to generate your credentials.
Once there, make sure that you are in the Credentials tab and click on Generate credentials.

NOTE: Keep this tab open as we'll need it later.

Choose a Surfshark server

Open the same page on another browser tab, go to the Locations tab, and locate the server that you wish to connect to.
Click on the download icon to the right of the server name and click on Download UDP.

Configure the OpenVPN client

Access your pfSense admin panel via a browser and navigate to System > Cert. Manager > CAs.

Press on the + Add button. Then, fill the fields out like this:

Descriptive Name: Surfshark_VPN;
Method: Import an existing Certificate Authority;
Certificate data:

Press Save at the bottom of the page.
Afterwards, navigate to VPN > OpenVPN > Clients and press +Add.

Fill in the fields as so:

General Information

Disable this client: Leave unchecked
Server mode: Peer to Peer (SSL/TLS)
Protocol: UDP on IPv4 only (you can also use TCP)
Device mode: tun – Layer 3 Tunnel Mode
Interface: WAN
Local port: Leave blank
Server host or address: The server hostname that you wish to connect to (refer to Choose a Surfshark server section in this article)
Server port: 1194 (use 1443 if you use TCP)
Proxy host or address: Leave blank
Proxy port: Leave blank
Proxy Authentication: None
Description: Any name you like

User Authentication Settings

Username and Password: Surfshark service credentials (refer to Get your credentials section in this article)
Authentication Retry: Leave unchecked

Cryptographic Settings

TLS Configuration: Check
Automatically generate a TLS Key: Uncheck
TLS Key:

-----BEGIN OpenVPN Static key V1-----
b02cb1d7c6fee5d4f89b8de72b51a8d0
c7b282631d6fc19be1df6ebae9e2779e
6d9f097058a31c97f57f0c35526a44ae
09a01d1284b50b954d9246725a1ead1f
f224a102ed9ab3da0152a15525643b2e
ee226c37041dc55539d475183b889a10
e18bb94f079a4a49888da566b9978346
0ece01daaf93548beea6c827d9674897
e7279ff1a19cb092659e8c1860fbad0d
b4ad0ad5732f1af4655dbd66214e552f
04ed8fd0104e1d4bf99c249ac229ce16
9d9ba22068c6c0ab742424760911d463
6aafb4b85f0c952a9ce4275bc821391a
a65fcd0d2394f006e3fba0fd34c4bc4a
b260f4b45dec3285875589c97d3087c9
134d3a3aa2f904512e85aa2dc2202498
-----END OpenVPN Static key V1-----

TLS Key Usage Mode: TLS Authentication
Peer certificate authority: Surfshark_VPN
Peer Certificate Revocation list: Do not define

Client certificate: webConfigurator default (59f92214095d8)(Server: Yes, In Use) (NOTE: The numbers on your machine could be different)
Encryption Algorithm: AES-256-GCM
Enable NCP: Check
NCP Algorithms: AES-256-GCM and AES-256-CBC
Auth digest algorithm: SHA512 (512-bit)
Hardware Crypto: No hardware crypto acceleration

Tunnel Settings:

IPv4 tunnel network: Leave blank
IPv6 tunnel network: Leave blank
IPv4 remote network(s): Leave blank
IPv6 remote network(s): Leave blank
Limit outgoing bandwidth: Leave blank
Compression: Omit Preference (Use OpenVPN Default)
Topology: Subnet – One IP address per client in a common subnet
Type-of-service: Leave unchecked
Don’t pull routes: Uncheck
Don’t add/remove routes: Leave unchecked

Advanced Configuration:

Custom options: paste the contents below

tls-client;
remote-random;
tun-mtu 1500;
tun-mtu-extra 32;
mssfix 1450;
persist-key;
persist-tun;
reneg-sec 0;
remote-cert-tls server;

UDP FAST I/O: Leave unchecked
Send/Receive Buffer: Default
Gateway creation: IPv4 only
Verbosity level: 3 (recommended)

Press Save at the bottom of the page and Apply changes at the top of the page.
Navigate to Interfaces > Interface Assignments and add Surfshark VPN interface.
Press on OPT1 on the left of your assigned interface and fill in the following information:

Enable: Check
Description: Surfshark VPN
MAC Address: Leave blank
MTU: Leave blank
MSS: Leave blank
Do not change anything else. Just scroll down to the bottom and press Save and Apply Changes.

Navigate to Services > DNS Resolver > General Settings

Enable: Check
Listen port: Leave as it already is
Enable SSL/TLS Service: Uncheck
SSL/TLS Certificate: webConfigurator default (59f92214095d8) (Server: Yes, In Use) (please note that the numbers on your machine could be different);
SSL/TLS Listen Port: Leave as it already is
Network Interfaces: All
Outgoing Network Interfaces: Surfshark VPN
System Domains Local Zone Type: Transparent
DNSSEC: Uncheck
DNS Query Forwarding: Check
DHCP Registration: Check
Static DHCP: Check

Click Save and Apply Changes.
While in DNS Resolver, select Advanced Settings at the top and then fill in the following:

ADVANCED PRIVACY OPTIONS

Hide Identity: Check
Hide Version: Check

ADVANCED RESOLVER OPTIONS

Prefetch Support: Check
Prefetch DNS Key Support: Check
Click Save and Apply changes.
Navigate to Firewall > NAT > Outbound and select Manual Outbound NAT rule generation.
Press Save and Apply Changes. Then four rules will appear. Leave all rules untouched and add a new one.

1. Select SurfsharkVPN as an Interface.
2. Source: your LAN subnet.
3. Click Save.
Navigate to Firewall > Rules > LAN and delete the IPv6 rule. Also, edit the IPv4 rule:

1. Press on Display Advanced.
2. Change Gateway to Surfshark VPN.
3. Click Save and Apply Changes.
Go to System > General Setup > DNS Server Settings and fill in the following:

DNS Server 1: 162.252.172.57; Gateway: SURFSHARKVPN_VPNV4
DNS Server 2: 149.154.159.92; Gateway: SURFSHARKVPN_VPNV4
Click Save.
Navigate to Status > OpenVPN, and it should state that the service is up.

Ensure the connection is successful

We always recommend checking if Surfshark VPN is working after setting it up for the first time. You can easily do it by performing Surfshark IP leak test and a DNS leak test. For your convenience, both are available on our website.