OpenVPN: A Reliable High-Performance VPN Protocol
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As the name suggests, it is an open-source technology that uses both TCP and UDP ports for transmission. OpenVPN also offers users 256-bit AES encryption. Due to its open-source nature, any security vulnerability reported publicly is usually fixed by the open-source community.
OpenVPN uses the OpenSSL library for providing encryption to users. The protocol allows the OpenSSL technology to manage not only the encryption but also the authentication. The protocol uses UDP port 53 and TCP port 80 for transmission. Moreover, it can also transmit data through other TCP ports 5500 – 55000.
OpenVPN is widely used due to the various advantages it offers. For starters, unlike other common protocols, OpenVPN is compatible with mobile operating systems like Android and iOS. More importantly, it can bypass any firewall and access a number of ports for communication.
The OpenVPN uses 1194 UDP port by default.
Users can use third-party scripts or tools to improve OpenVPN authentication.
Even on connections with high latency and across great distances, the protocol still offers great speed, making this the best performing protocol.
AES 256-bit encryption for data, SHA256 for control messages and 2048-bit SSL/TLS Handshake encryption.
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