web ui管理
https://github.com/GavinTan/openvpn
https://github.com/xiaoyunjie/openvpn-cms-vue
https://github.com/palark/ovpn-admin
https://github.com/tldr-it-stepankutaj/openvpn-mng
权限认证
https://github.com/ufukty/ovpn-auth
安装
https://github.com/xdev-asia-labs/openvpn-install
https://xdev.asia/blog/cai-dat-openvpn-tren-ubuntu-24-04/