{"id":24717,"date":"2026-02-02T14:53:01","date_gmt":"2026-02-02T14:53:01","guid":{"rendered":"https:\/\/outbyte.com\/blog\/?p=24717"},"modified":"2026-02-02T14:53:01","modified_gmt":"2026-02-02T14:53:01","slug":"openvpn-explained-tcp-vs-udp-and-why-its-still-the-gold-standard","status":"publish","type":"post","link":"https:\/\/outbyte.com\/blog\/openvpn-explained-tcp-vs-udp-and-why-its-still-the-gold-standard\/","title":{"rendered":"OpenVPN Explained: TCP vs. UDP and Why It\u2019s Still the Gold Standard"},"content":{"rendered":"\n

For over 20 years, the OpenVPN protocol has been the backbone of the VPN<\/a> industry. While newer protocols scream about speed, OpenVPN quietly continues to be the only tool that works when governments, ISPs, and strict corporate firewalls try to shut you down<\/a>.<\/p>\n\n\n\n

\"openvpn<\/figure>\n\n\n\n

In this article, we\u2019ll break down how OpenVPN works, examine its security, and explain the difference between OpenVPN TCP vs. UDP to find out why every major VPN provider<\/a> still includes it in their app.<\/p>\n\n\n\n

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\ud83d\udca1 Quick tip:<\/strong> Best Free VPNs in 2025: Top Secure & Reliable No-Cost Options<\/a><\/p>\n<\/blockquote>\n\n\n\n

<\/span>How OpenVPN Works and Why It Is Still Essential<\/span><\/h2>\n\n\n\n

While WireGuard<\/a> forces you to use a specific set of modern tools, OpenVPN is a complex, modular beast built on cryptographic agility<\/a>. It uses the OpenSSL library, meaning it can be configured to use almost any encryption standard available. Let\u2019s take a look under the hood.<\/p>\n\n\n\n

<\/span>AES-256 encryption<\/span><\/h3>\n\n\n\n

By default, most OpenVPN implementations use AES-256-GCM (Advanced Encryption Standard with 256-bit keys). Why does this matter?<\/p>\n\n\n\n