IPSec / IKEv2 are so customizable I have a hard time believing that OpenVPN can support any cipher suite that for example StrongSwan can't, I think the supported suit list is big enough x'D. I guess the more problematic issue here are the claims that NSA has been trying to weaken the standard from the beginning.. I agree with some of the info from @ETech in the previous answer, particularly on

IPsec and IKE policy parameters for VPN gateways. The IPsec and IKE protocol standard supports a wide range of cryptographic algorithms in various combinations. To see which parameters are supported in Azure Stack Hub so you can satisfy your compliance or security requirements, see IPsec/IKE parameters. Route OpenVPN traffic to a connected IPsec Tunnel w Jan 05, 2017 encryption - IKEv2 vs OpenVPN - Information Security Stack IPSec / IKEv2 are so customizable I have a hard time believing that OpenVPN can support any cipher suite that for example StrongSwan can't, I think the supported suit list is big enough x'D. I guess the more problematic issue here are the claims that NSA has been trying to weaken the standard from the beginning.. I agree with some of the info from @ETech in the previous answer, particularly on OpenWrt Project: VPN Overview

encryption - IKEv2 vs OpenVPN - Information Security Stack

About Azure Point-to-Site VPN connections | Microsoft Docs OpenVPN. OpenVPN is a SSL-based solution that can penetrate firewalls since most firewalls open the outbound TCP port that 443 SSL uses. IKEv2 VPN. IKEv2 VPN is a standards-based IPsec VPN solution that uses outbound UDP ports 500 and 4500 and IP protocol no. 50.

Best VPN Protocols: OpenVPN vs PPTP vs L2TP vs Others

Jul 02, 2020 OpenVPN - Wikipedia OpenVPN runs a custom security protocol based on SSL and TLS rather than supporting IKE, IPsec, L2TP or PPTP. OpenVPN offers support of smart cards via PKCS#11-based cryptographic tokens. Extensibility. OpenVPN can be extended with third-party plug-ins or scripts, which can be called at defined entry points. DoesOpenvpnSupportIpsecOrPptp – OpenVPN Community Jul 25, 2014 VPN — IPsec — Configuring a Site-to-Site IPsec VPN Remote Access IPsec VPN¶. pfSense software provides several means of remote access VPN, including IPsec, OpenVPN, and PPTP, and L2TP. Mobile IPsec functionality on pfSense has some limitations that could hinder its practicality for some deployments. pfSense software supports NAT-Traversal which helps if any of the client machines are behind NAT, which is the typical case.