How to Set Up SoftEther VPN Server on Ubuntu 22.04/20.04

This tutorial is going to show you how to run your own VPN server by installing SoftEther VPN server on Ubuntu 22.04/20.04. SoftEther VPN is an open-source multi-protocol VPN software that allows individual users to connect to a remote network.

Why Set Up Your Own VPN Server?

  • Maybe you are a VPN service provider or a system administrator, which behooves you to set up our own VPN server.
  • You don’t trust the no-logging policy of VPN service providers, so you go the self-host route.
  • You can use VPN to implement network security policy. For example, if you run your own email server, you can require users to log in only from the IP address of the VPN server by creating an IP address whitelist in the firewall. Thus, your email server is hardened to prevent hacking activities.
  • Perhaps you are just curious to know how VPN server works.

Set Up SoftEther VPN Server on Ubuntu

Features of SoftEther VPN

  • Lightweight and fast. In my test, I can watch YouTube 4K videos with SoftEther VPN. YouTube is blocked in my country (China).
  • Runs on Linux, FreeBSD, macOS, Solaris, and Windows servers, including support for X86, AMD64, ARM, PowerPC, MIPS architecture.
  • Supports multi-protocols, including traditional protocols like OpenVPN, L2TP, IPSec, SSTP, and the in-house SoftEtherVPN protocol, which is an HTTPS-based VPN protocol.
  • There is SoftEther client software for Linux, macOS, Windows, including support for ARM, PowerPC, and MIPS architecture.
  • NAT Traversal allows for running SoftEther VPN server behind a NAT without port forwarding. (enabled by default).
  • VPN over ICMP / VPN over DNS allows for establishing VPN connection by using ICMP or DNS even if the firewall or router blocks every TCP or UDP connection.
  • An HTML5-based modern admin console.


To follow this tutorial, you will need a VPS (Virtual Private Server) that can access blocked websites freely (Outside of your country or Internet filtering system). I recommend Kamatera VPS, which features:

  • 30 days free trial.
  • Starts at $4/month (1GB RAM)
  • High-performance KVM-based VPS
  • 9 data centers around the world, including United States, Canada, UK, Germany, The Netherlands, Hong Kong, and Isreal.

Follow the tutorial linked below to create your Linux VPS server at Kamatera.

Once you have a VPS running Ubuntu 22.04/20.04, follow the instructions below.

You also need a domain name to enable HTTPS for OpenConnect VPN. I registered my domain name from NameCheap because the price is low and they give whois privacy protection free for life.

Step 1: Install SoftEther VPN Server on Ubuntu 22.04/20.04

Run the following command to download the latest stable version of SoftEther VPN server.


Extract the archive.

tar xvf softether-vpnserver-*.tar.gz

Change to the vpnserver directory.

cd vpnserver/

Install the following dependency packages on the server.

sudo apt install gcc binutils gzip libreadline-dev libssl-dev libncurses5-dev libncursesw5-dev libpthread-stubs0-dev

Then run the following command to start the build process.


Now make will make two binaries from the source code.

  • vpnserver: The server binary.
  • vpncmd: SoftEther VPN command line management utility

It will also check if your server environment can be used to run the EtherVPN server. As you can see, my server passed the check.

vpncmd check SoftEther VPN Server

To keep the file system tidy and clean, it’s recommended to move the vpnserver directory to /opt/.

cd ..

sudo mv vpnserver /opt/softether

Step 2: Create Systemd Service Unit

The VPN server can be started with:

sudo /opt/softether/vpnserver start

Stop it with:

sudo /opt/softether/vpnserver stop

To make SoftEther VPN server automatically start at boot time, we can create a systemd service unit for it.

sudo nano /etc/systemd/system/softether-vpnserver.service

Add the following lines to this file.

Description=SoftEther VPN server

ExecStart=/opt/softether/vpnserver start
ExecReload=/bin/kill -HUP $MAINPID


Save and close the file. Then start the VPN server.

sudo systemctl start softether-vpnserver

Enable auto-start at boot time.

sudo systemctl enable softether-vpnserver

You can check its status with:

systemctl status softether-vpnserver

Sample output:

 softether-vpnserver.service - SoftEther VPN server
     Loaded: loaded (/etc/systemd/system/softether-vpnserver.service; enabled; vendor preset: enabled)
     Active: active (running) since Sat 2022-09-17 10:49:15 UTC; 20s ago
   Main PID: 2944053 (vpnserver)
      Tasks: 32 (limit: 629145)
     Memory: 17.9M
        CPU: 603ms
     CGroup: /system.slice/softether-vpnserver.service
             ├─2944053 /opt/softether/vpnserver execsvc
             └─2944054 /opt/softether/vpnserver execsvc

Hint: If the above command doesn’t quit immediately, you can press the Q key to gain back control of the terminal.

If it’s not running, then you can check the journal to find out what’s wrong.

sudo journalctl -eu softether-vpnserver

Check the listening ports.

sudo  ss -lnptu | grep vpnserver

Sample output:

udp   UNCONN 0      0  *    users:(("vpnserver",pid=2952110,fd=62))                                                           
udp   UNCONN 0      0*    users:(("vpnserver",pid=2952110,fd=58))                                
udp   UNCONN 0      0    *    users:(("vpnserver",pid=2952110,fd=5))
udp   UNCONN 0      0    *    users:(("vpnserver",pid=2952110,fd=11))                              
udp   UNCONN 0      0    *    users:(("vpnserver",pid=2952110,fd=53))                              
udp   UNCONN 0      0    *    users:(("vpnserver",pid=2952110,fd=16))                              
tcp   LISTEN 0      128  *    users:(("vpnserver",pid=2952110,fd=40))                              
tcp   LISTEN 0      128  *    users:(("vpnserver",pid=2952110,fd=44))                              
tcp   LISTEN 0      128  *    users:(("vpnserver",pid=2952110,fd=48))                              
tcp   LISTEN 0      128  *    users:(("vpnserver",pid=2952110,fd=36))

As you can see, SoftEther VPN server listens on mutiple ports. That’s because it enables several VPN protocols at the same time (L2TP, IPsec, SSTP, OpenVPN, and in-house SoftEther VPN protocol). Port 5555 is used by the HTML5 admin console.

SSTP and SoftEtherVPN protocols uses TCP port 443. If there’s already a web server like Apache or Nginx using TCP port 443, then you won’t be able to connect to SoftEtherVPN server over TCP port 443.

Step 3: Open Ports In Firewall

If there’s a firewall running on your server, then you will need to open several ports. For example, if you use UFW, then run the following command.

sudo ufw allow 80,443,992,1194,555/tcp

sudo ufw allow 1194,51612,53400,56452,40085/udp

Step 4: Configure SoftEther VPN Server

Now we need to use vpncmd to configure SoftEther VPN Server.


Choose 1 to configure the VPN server.


  • The admin console is listening on port 5555. Enter to access the admin console.
  • Then press Enter to skip Virtual Hub selection.
  • By default, the password for the admin console is empty. We need to set a password by executing the ServerPasswordSet command.

vpncmd ServerPasswordSet

Next, we need to configure a virtual hub in SoftEtherVPN. We can use the default virtual hub named DEFAULT.


softethervpn default virtual hub ubuntu

Then create a VPN account with the following command. Replace username with your preferred username.

UserCreate username

You will be asked to enter a group name, full name and user description. You can press Enter to leave them empty.

softethervpn create user accounts ubuntu

Set a password for this user.

UserPasswordSet username

softethervpn set user password

Run the following command to enable virtual NAT and DHCP server function, otherwise VPN clients won’t be able to get an IP address from the VPN server.


Next, we need to configure the NAT for VPN users by executing the DhcpSet command.


You will be asked a series of questions. Use the following settings.

  • Start Point for Distributed Address Band:
  • End Point for Distributed Address Band:
  • Subnet Mask:
  • Lease Limit (Seconds): 7200
  • Default Gateway:
  • DNS Server 1:
  • DNS server 2:
  • Domain Name: Press Enter to skip.
  • Save Log: yes

softether vpn server set dns server

To log out from the admin console, run


Step 5: Install a DNS Resolver on the Server

Since we specify the VPN server as the DNS server for clients, we need to run a DNS resolver on the VPN server. We can install the bind9 DNS server.

sudo apt install bind9

Once it’s installed, BIND will automatically start. You can check its status with:

systemctl status named

Sample output:

● named.service - BIND Domain Name Server
     Loaded: loaded (/lib/systemd/system/named.service; enabled; vendor preset: enabled)
     Active: active (running) since Sun 2020-05-17 08:11:26 UTC; 37s ago
       Docs: man:named(8)
   Main PID: 13820 (named)
      Tasks: 5 (limit: 1074)
     Memory: 14.3M
     CGroup: /system.slice/named.service
             └─13820 /usr/sbin/named -f -u bind

If it’s not running, start it with:

sudo systemctl start named

Edit the BIND DNS server’s configuration file.

sudo nano /etc/bind/named.conf.options

Add the following line to allow VPN clients to send recursive DNS queries.

allow-recursion {;; };
softether bind dns resolver

Save and close the file. Then edit the /etc/default/named files.

sudo nano /etc/default/named

Add -4 to the OPTIONS to ensure BIND can query root DNS servers.

OPTIONS="-u bind -4"

Save and close the file.

By default, BIND enables DNSSEC, which ensures that DNS responses are correct and not tampered with. However, it might not work out of the box due to trust anchor rollover and other reasons. To make it work properly, we can rebuild the managed key database with the following commands.

sudo rndc managed-keys destroy
sudo rndc reconfig

Restart BIND9 for the changes to take effect.

sudo systemctl restart named

Then you need to run the following command to allow VPN clients to connect to port 53.

sudo ufw insert 1 allow in from

Step 6: Obtain a Trusted TLS Certificate from Let’s Encrypt

SoftEtherVPN server creates a self-signed TLS certificate during the installation process, but we will use Let’s Encrypt certificate. The advantage of using Let’s Encrypt certificate is that it’s free, easier to set up, and trusted by VPN client software.

Run the following commands to install Let’s Encrypt client (certbot) from the default Ubuntu repository.

sudo apt install certbot

To check the version number, run

certbot --version

Sample output:

certbot 1.21.0

I recommend using the standalone or webroot plugin to obtain TLS certificate.

Standalone Plugin

If there’s no web server running on your Ubuntu 22.04/20.04 server and you want SoftEther VPN server to use port 443, then you can use the standalone plugin to obtain TLS certificate from Let’s Encrypt. Run the following command. Don’t forget to set DNS A record for your domain name.

sudo certbot certonly --standalone --preferred-challenges http --agree-tos --email [email protected] -d


  • certonly: Obtain a certificate but don’t install it.
  • --standalone: Use the standalone plugin to obtain a certificate
  • --preferred-challenges http: Perform http-01 challenge to validate our domain, which will use port 80.
  • --agree-tos: Agree to Let’s Encrypt terms of service.
  • --email: Email address is used for account registration and recovery.
  • -d: Specify your domain name.

If SSL certificate is successfully obtained, you will see the following texts.

Successfully received certificate.
Certificate is saved at: /etc/letsencrypt/live/
Key is saved at:         /etc/letsencrypt/live/
This certificate expires on 2022-12-16.
These files will be updated when the certificate renews.
Certbot has set up a scheduled task to automatically renew this certificate in the background.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
If you like Certbot, please consider supporting our work by:
 * Donating to ISRG / Let's Encrypt:
 * Donating to EFF:          

Using webroot Plugin

If your Ubuntu 22.04/20.04 server has a web server listening on port 80 and 443, then it’s a good idea to use the webroot plugin to obtain a certificate because the webroot plugin works with pretty much every web server and we don’t need to install the certificate in the web server.

First, you need to create a virtual host for


If you are using Apache, then

sudo nano /etc/apache2/sites-available/

And paste the following lines into the file.

<VirtualHost *:80>        

        DocumentRoot /var/www/html/

Save and close the file. Then create the web root directory.

sudo mkdir /var/www/html

Set www-data (Apache user) as the owner of the web root.

sudo chown www-data:www-data /var/www/html -R

Enable this virtual host.

sudo a2ensite

Reload Apache for the changes to take effect.

sudo systemctl reload apache2

Once virtual host is created and enabled, run the following command to obtain Let’s Encrypt certificate using webroot plugin.

sudo certbot certonly --webroot --agree-tos --email [email protected] -d -w /var/www/html


If you are using Nginx, then

sudo nano /etc/nginx/conf.d/

Paste the following lines into the file.

server {
      listen 80;

      root /var/www/html/;

      location ~ /.well-known/acme-challenge {
         allow all;

Save and close the file. Then create the web root directory.

sudo mkdir -p /var/www/html

Set www-data (Nginx user) as the owner of the web root.

sudo chown www-data:www-data /var/www/html -R

Reload Nginx for the changes to take effect.

sudo systemctl reload nginx

Once virtual host is created and enabled, run the following command to obtain Let’s Encrypt certificate using webroot plugin.

sudo certbot certonly --webroot --agree-tos --email [email protected] -d -w /var/www/html

Step 7: Install the Let’s Encrypt TLS Certificate in SoftEther VPN Server

Log into the VPN admin console as root.

sudo /opt/softether/vpncmd

Choose 1 to manage the VPN server. You will need to enter the password set in step 2.


Then run the following command to set TLS Certificate and private key of VPN server.


Enter the following path for the certificate.


Enter the following path for the private key.


softethervpn server set letsencrypt certificate

Log out from the admin console.


Restart VPN server.

sudo systemctl restart softether-vpnserver

Establish VPN Connection on Windows

You can use the Windows’s built-in tools to establish VPN connection.

Press Windows key + I to open the Settings app. Then select Network & Internet -> VPN -> Add a VPN Connection.

Enter the VPN Connection details:

  • VPN Provider: Windows (Built-in)
  • Connection Name: SoftEther
  • Server Name or (Please don’t add the https:// prefix).
  • VPN Type: Secure Socket Tunneling Protocol (SSTP)
  • Type of Sign-in info: username and password
  • Username: Your SoftEther VPN username
  • Password: Your SoftEther VPN password

windows establish VPN connection softether

Save the VPN settings, then select this VPN profile and click Connect.

VPN settings windows softether

Once the VPN is connected, you can open Windows Powershell and enter the following command to check your VPN adapter.


ppp adapter softether

As you can see, the SoftEther network adapter has been given the private IP address

Then you should go to to check your public IP address. If it shows your VPN server’s public IP address, that means SoftEther VPN is working properly.

Install and Use SoftEtherVPN Client on Windows

Windows’s built-in VPN tool allows you to use the SSTP VPN protocol. If you want to use the SoftEther VPN protocol, then you need to install the SoftEther VPN client.

Go to SoftEtherVPN download page to download the SoftEther VPN client software for Windows, then run the installer. When selecting software components, choose the first one (SoftEther VPN client).

softether vpn client manager

Once it’s installed, run the client software. Double click add VPN connection.

softether add vpn connection

You will be prompted to create a virtual network adapter. Click Yes to continue.

softether create a virtual network adapter

Choose the default name for the virtual network adapter.

virtual network adpater name

Once the virtual network adapter is created, double click add VPN connection again. The VPN connection setting properties window will appear. You need to enter

  • the hostname of the VPN server: like You need to create DNS A record for this hostname.
  • port number: You can use the default port 443.
  • Virtual Hub name: DEFAULT.
  • VPN username and password.

Save your settings. Then double-click the name of this VPN connection. It will try to establish a VPN connection to the VPN server

Install SSTP VPN Client on Linux Desktop


sudo apt install sstp-client network-manager-sstp

Fedora/CentOS/Rocky Linux/Alama Linux

sudo dnf install sstp-client NetworkManager-sstp

Then you can run the following command to establish VPN conenction.

sudo sstpc --cert-warn --save-server-route --user vpn_username --password vpn_password usepeerdns require-mschap-v2 noauth noipdefault nobsdcomp nodeflate

Then open another terminal window and run the following command to check if there’s is a network interface named ppp0.

ip addr

It it exists, then the VPN connections is successfully established. Next, run the following command to set the VPN server as the gateway.

sudo route add default ppp0

Auto-Connect on System Startup

To make SoftEther VPN client automatically connect to the server at boot time, we can create a systemd service unit.

sudo nano /etc/systemd/system/softether-vpnclient.service

Put the following lines to the file. Replace the red text.

  Description=SoftEther VPN Client systemd-resolved.service

  ExecStart=/usr/sbin/sstpc --cert-warn --save-server-route --user vpn_username --password vpn_password usepeerdns require-mschap-v2 noauth noipdefault nobsdcomp nodeflate
  ExecStartPost=/bin/bash -c 'sleep 7; route add default ppp0'
  ExecStop=pkill sstpc


Save and close the file. Then enable this service so that it will start at boot time.

sudo systemctl enable softether-vpnclient.service

To start this Systemd service immediately, run

sudo systemctl start softether-vpnclient.service

To stop this Systemd service, run

sudo systemctl stop softether-vpnclient.service


SoftEther VPN is pretty fast. I can use it to watch 4k videos on YouTube. As you can see from the screenshot below, the connection speed is 69867 Kbps, which translates to 68 Mbit/s.

softethervpn speed test

Auto-Renew Let’s Encrypt Certificate

Edit root user’s crontab file.

sudo crontab -e

Add the following line at the end of the file. It’s necessary to reload html service for the VPN server to pick up new certificate and key file.

@daily certbot renew --quiet; systemctl restart softether-vpnserver


You can enable TCP BBR to boost VPN speed. please check out the following tutorial.

Wrapping Up

That’s it! I hope this tutorial helped you install and configure SoftEther VPN on Ubuntu 22.04/20.04. As always, if you found this post useful, then subscribe to our free newsletter to get more tips and tricks 🙂

Rate this tutorial
[Total: 12 Average: 5]

16 Responses to “How to Set Up SoftEther VPN Server on Ubuntu 22.04/20.04

  • Nander
    1 year ago

    I think that /opt/softether/vpnserver needs to be made an executable.

  • Xiao Guoan (Admin)
    1 year ago

    If you use the Linux SSTP client and encounter the following error,

    **Error: Connection was aborted, Unknown Status Attribute, (-1)

    It could be that your connection to the VPN server isn’t good. I once helped my friend set up his SoftEtherVPN server, but packet loss rate is 43.75%, which is super high.

    64 bytes from xx.xx.xx.x: icmp_seq=15 ttl=48 time=406 ms
    64 bytes from xx.xx.xx.x: icmp_seq=15 ttl=112 time=406 ms (DUP!)
    64 bytes from xx.xx.xx.x: icmp_seq=16 ttl=48 time=406 ms
    64 bytes from xx.xx.xx.x: icmp_seq=16 ttl=112 time=406 ms (DUP!)
    --- ping statistics ---
    16 packets transmitted, 9 received, +9 duplicates, 43.75% packet loss, time 15127ms

    However, even under this unfavorable network condition, SoftherVPN works really well when you enable the TCP BBR algorithm in the Linux kernel. The following screenshot shows that Youtube video play speed is 77371 Kbps, which translates to 75 Mbit/s.

    It uses the SSTP VPN protocol on port 443.

  • hey, how to proceed step 5 if i dont want to set a domain name and just use ip address?

    • Xiao Guoan (Admin)
      1 year ago

      I don’t think SoftEther will work without a domain name.

  • Steven
    1 year ago

    Thank you for this, and all your other tutorials. I’ve used SoftEther Server on Windows using the vpnazure option without requiring firewall ports to be opened, but never explored it on Linux. This tutorial is excellent. I havent tested it yet, but will do so at the earliest. Thanks again for all the efforts you put into your tutorial articles. God bless you.

  • T.W. Dargis
    1 year ago

    Regarding the

    **Error: Connection was aborted, Unknown Status Attribute, (-1)

    error it might just be your password.
    I had a password that ended in double exclamation marks (!!) and got that error. I wrapped my password in single quotes and it worked perfectly.

    Thanks, Xiao!

  • Can i use this set up for android and ios ?
    And can i control my hub with softether windows vpn manager?

  • shmanir
    1 year ago

    Dear sir
    so many thanks for help,
    only i can not configure android
    i tried setup , but unsuccessful,
    do youknow other app for android or do you set it for open sstp client app

  • hello , i used Open SSTP Client app for android
    its great with adsl , but not working with mobile data , my location is in iran where unfortunetly has very very powerful internet censorship
    hant you any idea for mobile data?
    thank you

  • I have a problem when run the command ServerCertSet to set TLS Certificate and private key of VPN server.

    Error occurred. (Error code: 77)
    The specified X509 certificate file does not contain a RSA 1024 bit or 2048 bit public key. SoftEther VPN software supports only RSA 1024 bit or 2048 bit certificates.

    • To fix it you need to add ” –key-type rsa –rsa-key-size 2048″ to the end of “sudo certbot certonly –webroot –agree-tos –email [email protected] -d -w /var/www/html”

      Like this |

      sudo certbot certonly –webroot –agree-tos –email [email protected] -d -w /var/www/html –key-type rsa –rsa-key-size 2048

      or this if you are using the standalone version |

      sudo certbot certonly –standalone –preferred-challenges http –agree-tos –email [email protected] -d –key-type rsa –rsa-key-size 2048

  • Steven F. Sutherland
    8 months ago

    Hello, my take on your VPN Server setup is not a glowing observation.

    1. Your approach of not using your own home network that you all ready pay monthly to have Internet Access misses a HUGE HUGE audience.

    2. Do not use any outside virtual or real servers. Use your own home network pc or server to setup your VPN Server. This will test how well using SoftEther can be used to permit running your own private VPN, without having to open ports, forwarding or other means to permit you connecting to your own home network from any available Internet connection capacity in a secure VPN that costs you NO ADDITIONAL charges on a monthly basis. This is your home network via your home ISP that you pay monthly to have Internet access.

    3. SoftEther claims NAT Transversal & DDNS to permit such a successful setup to enable your own VPN from behind your home ISP provider’s Internet modem-router or your own private modem-router. Security is orders of magnitude improved if no ports are needed to be opened at the Home-ISP demark (modem-router).

    Set yourself upon another project path to see how to make this happen, if possible, using just your Home ISP setup.

    Looking forward to seeing your VPN project as defined above.

    Steven F. Sutherland

  • I sent you an email please check it regarding small work .

Leave a Comment

  • Comments with links are moderated by admin before published.
  • Your email address will not be published.
  • Use <pre> ... </pre> HTML tag to quote the output from your terminal/console.
  • Please use the community ( for questions unrelated to this article.
  • I don't have time to answer every question. Making a donation would incentivize me to spend more time answering questions.

The maximum upload file size: 2 MB. You can upload: image. Links to YouTube, Facebook, Twitter and other services inserted in the comment text will be automatically embedded. Drop file here