/ip firewall filter add chain=input protocol=udp src-address-list=Allowed_Office_IPs dst-port=1194 action=accept RouterOS v7 supports aes-256-gcm (faster and more secure). Manually change the generator's default if it uses older CBC ciphers.
client dev tun proto udp remote 203.0.113.10 1194 resolv-retry infinite nobind persist-key persist-tun cipher AES-256-CBC auth SHA1 verb 3 auth-user-pass <ca> -----BEGIN CERTIFICATE----- (CA certificate text here) -----END CERTIFICATE----- </ca> Most modern generators automatically embed the CA certificate into the .ovpn file so you don't manage separate files. Part 5: Critical Security Tweaks (Don't Skip) A generator gets you 80% of the way. You need the final 20% for security. 1. Enable TLS Authentication If your generator supports it, add tls-auth . This prevents DoS attacks and unauthorized probe packets. You must generate a ta.key and reference it both on the MikroTik ( tls-auth=yes under ovpn-server) and in the client OVPN file ( tls-auth ta.key 1 ). 2. Restrict VPN to Specific Source IPs (Optional) If your remote employees have static WAN IPs, add this to the firewall: mikrotik openvpn config generator
/ppp secret add name=john.doe password=SecurePass123 service=ovpn profile=ovpn-profile Open a terminal to your MikroTik. Paste the generated script. Run it line by line or as a block. Step 5: Download the Client Config The generator also spits out a client.ovpn file. It looks like this: Part 5: Critical Security Tweaks (Don't Skip) A