This is a bash script that automates the installation and configuration of the SoftEther VPN Server on Ubuntu 20.04 or later. SoftEther VPN Server is a powerful and easy-to-use multi-protocol VPN software that runs on Linux, Windows, Mac, FreeBSD, and Solaris.

• Features
• Install & Update
• Uninstall
• Update
• Security
• Resources
• Disclaimer
• Certificate

• Updates your Linux system and installs some useful tools such as Certbot, Ncat, and Net-tools.
• Downloads and compiles the latest version of SoftEther VPN Server (v4.43-9799-rtm-2023.08.31) from the official website.
• Creates a systemd service for SoftEther VPN Server and enables it to start on boot.
• Enables IPv4 forwarding for VPN traffic.
• Opens the necessary ports for VPN protocols using ufw firewall.
• Update SoftEther VPN Server without losing config(Be careful)
• Optionally, set up a certificate from Let's Encrypt using Certbot for secure VPN connections.
• Optionally, installs BBR.
• Optionally, disable DDns(Dynamic DNS)

wget -O se-install https://raw.githubusercontent.com/Pink210/softether-easyinstall/master/install-ubuntu-inteloramd.bash  && chmod +x se-install && ./se-install

wget -O se-install https://raw.githubusercontent.com/Pink210/softether-easyinstall/master/install-ubuntu-arms.bash  && chmod +x se-install && ./se-install

wget -O se-install https://raw.githubusercontent.com/Pink210/softether-easyinstall/master/install_DE.bash  && chmod +x se-install && ./se-install

wget -O se-install https://raw.githubusercontent.com/Pink210/softether-easyinstall/master/Uninstall.bash  && chmod +x se-install && ./se-install

sudo systemctl stop softether-vpnserver.service
sudo systemctl disable softether-vpnserver.service

sudo rm -rf /opt/vpnserver

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

sudo systemctl daemon-reload

sudo ufw deny 22
sudo ufw deny 53
sudo ufw deny 2280
sudo ufw deny 2380
sudo ufw deny 443 
sudo ufw deny 80
sudo ufw deny 992
sudo ufw deny 1194
sudo ufw deny 2080
sudo ufw deny 5555
sudo ufw deny 4500
sudo ufw deny 1701
sudo ufw deny 500
sudo ufw deny 8280
sudo ufw deny 500,4500,8280,53/udp

If you already have Softether installed on your server but want to update it to the latest version you can use the install code. the script now makes a backup, update, and restore your backup. but is more safe to do it Manual or just make a backup with Softether Windows software.

sudo systemctl stop softether-vpnserver.service

sudo cp /opt/vpnserver/vpn_server.config /opt/vpnserver/vpn_server.config.bak

wget -O se-install https://raw.githubusercontent.com/Pink210/softether-easyinstall/master/install-ubuntu-inteloramd.bash  && chmod +x se-install && ./se-install

wget -O se-install https://raw.githubusercontent.com/Pink210/softether-easyinstall/master/install-ubuntu-arms.bash  && chmod +x se-install && ./se-install

sudo cp /opt/vpnserver/vpn_server.config.bak /opt/vpnserver/vpn_server.config

sudo systemctl restart softether-vpnserver

now you can disable DDns from auto-installer disable DDns(Dynamic DNS)

sed -i 's/bool Disabled false/bool Disabled true/g' /opt/softether/vpn_server.config

sed -i 's/bool DisableNatTraversal false/bool DisableNatTraversal true/g' /opt/softether/vpn_server.config

sudo systemctl restart softether-vpnserver

If you have a domain, you must configure the certificate as follows in Softether Settings:

vpmcmd (if vpmcmd not work reboot your linux server and try it again)
 you server password
 ServerCertSet
 /etc/letsencrypt/live/YourDomainName/fullchain.pem
 /etc/letsencrypt/live/YourDomainName/privkey.pem
 exit
 sudo systemctl restart softether-vpnserver

It is not advised that you remove the log, although you may do so:

cd .. && cd opt/softether && rm -r packet_log security_log server_log

For SoftEtherVPN setting : just type vpncmd in the Linux terminal

vpncmd

To reset client traffic:

wget -O se-install https://raw.githubusercontent.com/Pink210/softether-easyinstall/master/reset-traffic-bbr.bash  && chmod +x se-install && ./se-install

### My tasks
- [X] Get Server certificate
- [X] Disable update popup
- [ ] Set ServerCertSet 
- [X] Adding BBR
- [X] Make backup/install/restore for update into the script
- [X] Uninstall script
- [X] Adding disable DDns into the script
- [X] Adding Close the extra ports into the script
- [X] Make a script for restarting client traffic
- [X] Make a shortcut for the SoftEtherVPN setting

Here are some links to other resources or tutorials on how to use SoftEther VPN Server or how to set up different VPN protocols:

• SoftEther VPN Project
• SoftEther VPN User Forum
• How to Set Up SoftEther VPN on Windows
• How to Set Up SoftEther VPN on Android

This script is provided as-is without any warranty or support. Use it at your own risk. The author is not responsible for any damage or loss caused by using this script.

THANK YOU Daiyuu Nobori for making this beautiful software.