Set up a multi-protocol VPN server (supporting L2TP, SSTP, V2Ray, SSE, SS, etc.) on SoftEther and implement a wall-crossing tunnel

We are looking for an experienced network engineer or VPN specialist to help us set up and configure a multi-protocol VPN server on the SoftEther platform. The server must support L2TP, SSTP, V2Ray, SSE, Shadowsocks (SS), and other protocols, and can effectively implement wall-crossing tunnels to ensure stable, secure, and efficient network connections. Main responsibilities: Environment preparation and installation: Install and configure the SoftEther VPN server on the specified server (cloud or physical server). Ensure that the server operating system (such as Ubuntu, CentOS, etc.) is correctly configured and optimized. Multi-protocol configuration: Configure and optimize the following VPN protocols: L2TP/IPsec SSTP V2Ray Shadowsocks (SS) SSE (Shadowsocks Extended) Wall tunnel implementation: Ensure that the VPN server can effectively bypass network blocking and achieve stable wall-climbing function. Optimize network routing and firewall rules to ensure the security and privacy of data transmission. Security configuration: Configure firewalls and security groups to limit unauthorized access. Implement strong password policies and multi-factor authentication if required. Update and maintain software regularly to fix known vulnerabilities. Performance optimization: Optimize VPN server performance to ensure high concurrency and low latency. Monitor server resource usage and adjust resources. Documentation and training: Provides detailed configuration documents and user guides. Train team members on how to use and maintain the VPN server if necessary. Testing and verification: Conduct thorough testing to ensure all protocols are working properly. Verify the stability and reliability of the tunnel over the wall. Job Requirements: Technical Skills: Familiar with SoftEther VPN installation, configuration, and management. Proficient in VPN protocol configuration and optimization such as L2TP/IPsec, SSTP, V2Ray, Shadowsocks (SS), and SSE. Be familiar with Linux operating system (such as Ubuntu and CentOS) management and command line operations. Understand network security principles and be able to configure firewalls and security groups. Experience requirements: At least 3 years experience in VPN server setup and maintenance. The case in which the multi-protocol VPN server is successfully established is preferred. Experience in network blocking and wall tunnel optimization is preferred. Other requirements: Good problem solving ability and technical support ability. Good communication skills, able to clearly explain technical details. Strong sense of responsibility, able to complete tasks on time.