OpenVPN
What is Port 1194?
Port 1194 is the default port for OpenVPN, one of the most widely used open-source VPN solutions. OpenVPN provides secure point-to-point or site-to-site connections using a custom security protocol based on SSL/TLS. It can run over both UDP (preferred for performance) and TCP (for environments where UDP is blocked). OpenVPN supports certificate-based authentication, username/password, and two-factor authentication. It creates a virtual network interface that encrypts and tunnels all traffic between VPN peers. OpenVPN is used by individuals for privacy, by businesses for remote access and site-to-site connectivity, and by commercial VPN providers. Its open-source nature allows security auditing, and it runs on virtually every operating system.
Common Uses
- Remote access VPN for employees and contractors
- Site-to-site VPN between offices
- Privacy-focused consumer VPN services
- Secure access to cloud infrastructure
Technical Details
Copy-paste commands to check port 1194 (OpenVPN) from your terminal
Test connectivity
nc -zv example.com 1194
curl -v --max-time 5 http://example.com:1194/
telnet example.com 1194
nmap -p 1194 -sU -sV example.com
(echo > /dev/tcp/example.com/1194) 2>/dev/null && echo "open" || echo "closed"
Open port in firewall
sudo ufw allow 1194/tcp
sudo iptables -A INPUT -p tcp --dport 1194 -j ACCEPT
sudo firewall-cmd --permanent --add-port=1194/tcp && sudo firewall-cmd --reload
Security Considerations
OpenVPN is generally considered secure when properly configured. Use strong certificates (RSA 2048+ or ECDSA), TLS 1.2+, and a tls-auth or tls-crypt HMAC key. Disable weak ciphers. Use certificate revocation lists (CRLs). Consider running OpenVPN on port 443/TCP to bypass restrictive firewalls. Keep the OpenVPN server software updated.
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