May succumb to traffic shaping more easily than OpenVPN due to lack of support for TCP.Īll versions of Windows and most other operating systems (including mobile) have native support for PPTP. WireGuard® uses the UDP protocol and can be configured to use any port. OpenVPN can be easily configured to run on any port using either UDP or TCP thereby easily bypassing restrictive firewalls. IKEv2 is easier to block than OpenVPN due to its reliance on fixed protocols and ports. IKEv2 uses UDP 500 for the initial key exchange, protocol 50 for the IPSEC encrypted data (ESP) and UDP 4500 for NAT traversal. PPTP can be easily blocked by restricting the GRE protocol. PPTP uses TCP port 1723 and GRE (Protocol 47). Most customers report higher speeds than OpenVPN. WireGuard® benefits from extremely high-speed cryptographic primitives and deep integration with underlying operating system kernel, so speeds are very high with low overhead. When used in its default UDP mode on a reliable network OpenVPN performs similarly to IKEv2. IPSec with IKEv2 should in theory be the faster than OpenVPN due to user-mode encryption in OpenVPN however it depends on many variables specific to the connection. With RC4 and 128 bit keys, the encryption overhead is least of all protocols making PPTP the fastest. WireGuard® is in-tree with Linux Kernel 5.6 and has been reviewed by a 3rd party auditor.
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It is relatively new and has not seen the thorough vetting of OpenVPN, though the code-base is extremely small, so full audits are possible by individuals and not just large organizations.
WireGuard® has no known major vulnerabilities. OpenVPN has no known major vulnerabilities and is generally considered secure when implemented using a secure encryption algorithm and certificates for authentication. However Leaked NSA presentations indicate that IKE could be exploited in an unknown manner to decrypt IPSec traffic. IPSec has no known major vulnerabilities and is generally considered secure when implemented using a secure encryption algorithm and certificates for authentication. Microsoft strongly recommends upgrading to IPSec where confidentiality is a concern. MSCHAP-v2 is vulnerable to dictionary attack and the RC4 algorithm is subject to a bit-flipping attack. The Microsoft implementation of PPTP has serious security vulnerabilities. Makes use of a UDP-based handshake and the key exchange uses perfect forward secrecy while avoiding both key-compromise impersonation and replay attacks. OpenSSL implements a large number of cryptographic algorithms such as 3DES, AES, RC5, Blowfish.Īs with IKEv2, IVPN implements AES with 256 bit keys.īuilt atop ChaCha20 for symmetric encryption ( RFC7539), Curve25519 for Elliptic-curve Diffie–Hellman (ECDH) anonymous key agreement, BLAKE2s for hashing ( RFC7693), SipHash24 for hashtable keys, and HKDF for key derivation ( RFC5869). OpenVPN uses the OpenSSL library to provide encryption. IVPN implements IKEv2 using AES with 256 bit keys. IKEv2 implements a large number of cryptographic algorithms including 3DES, AES, Blowfish, Camellia. MPPE implements the RSA RC4 encryption algorithm with a maximum of 128 bit session keys. The PPP payload is encrypted using Microsoft's Point-to-Point Encryption protocol ( MPPE). It has the potential to offer a simpler, more secure, more efficient, and easier to use VPN over existing technologies. WireGuard® is an extremely fast VPN protocol with very little overhead and state-of-the-art cryptography. Provides full confidentiality, authentication and integrity. Uses a custom security protocol and SSL/TLS for key exchange. Very popular however not based on standards (RFC).
Open-source VPN protocol developed by OpenVPN technologies. IPSec has become the defacto standard protocol for secure Internet communications, providing confidentiality, authentication and integrity.
IKEv2 (Internet key exchange version 2) is part of the IPSec protocol suite. The PPTP specification does not actually describe encryption or authentication features and relies on the PPP protocol being tunneled to implement security functionality.