OpenVPN Setting OpenVPN Mode server client Device tun tap Protocol udp tcp Authentication SHA1 MD5 none Cipher AES-128-CBC AES-256-CBC DES-EDE3-CBC none Enable compression on the VPN link Port Client IP Address Assignment Client Netmask Assigment Server IP Address Push Routes Routes to the specific client Max Clients Enable Client-To-Client Enable Duplicate-cn Server IP address Enable Persist Key Enable Persist Tun Keep Alive Enable MTU test Enable tun MTU Tun MTU Enable MSSFIX MSSFIX Enable TLS-Server TLS Timeout Upload TLS Key[ta.key] TLS Key Remove Download NS-Cert-Type server client PKCS12 password Upload PKCS12 certificate[*.p12] PKCS12 Certificate Remove Download Upload root CA certificate[ca.crt] CA Remove Download Upload Local Certificate [*.crt] Local Certificate Remove Download Upload Local Private Key [.key] Local Private Key Remove Download Upload Diffie-Hellman [dh1024.pem] Diffie-Hellman Remove Download Enable NAT Enable Fullcone NAT Enable Mute Replay Warnings Mute Log Level Enable