That is a cipher with 256 encryption, RSA-4096 handshake, and SHA-512 hash authentication. Most commonly, OpenVPN uses the highest encryption available. However, most VPN providers use the highest encryption on the control channel rather than the data channel. This makes sure your VPN connection and your data are never at risk. Data channel encryption secures your data, while control channel encryption secures the connection. VPN encryption is done on the data channel as well as the control channel. Most VPN providers prefer to use the Blowfish and AES cipher. OpenVPN can therefore use various ciphers offered by the OpenSSL library. OpenSSL provides all the necessary encryption and authentication needed. OpenVPN is the most secure VPN protocol and is also highly configurable. OpenSSL is a toolkit for SSL/TLS and cryptography – what is needed for secure end-to-end communications. OpenVPN is open source and utilizes the OpenSSL library alongside other security technologies. OpenVPN is the gold-industry standard of VPN protocols.

They are secure with fast speeds and stability and are not easily compromised. These are protocols most reputable VPN providers prefer to offer. Owner association with NSA.Ĭan bypass some restrictions. Use when other protocols have failed.Ĭlosed-source. It is not recommended (can be vulnerable). Vulnerable to MITM attacks (pre-shared keys). It is not recommended (poor privacy and security). Use for speed however, there are privacy concerns. Use on mobile phones or when regularly switching networks. It is highly recommended when privacy and security are top priorities.Ĭlosed-source/open-source.

X vpn protocols