Hi, Thanks for your reply. I know that OpenVPN is single-threaded. But I expect more than 5MB/s on a CPU with 1,6/2,6 GHz and AES-NI support though. Consider that the OpenSSL speed benchmark showed that it's able to encrypt between 100 and 300 MB/s, even in the virtualized environment.

OpenVPN is a critical set of protocols used to provide secure communication through the Internet. There are many different cipher suites that can be used depending on the requirements of the user. The configuration used may impact the performance and therefore the throughput of the devices in the network. Jan 18, 2019 · Kudos to OpenVPN team for this. 1. Just like lzo, it should be clear that there isn’t much use to lz4 in place of lz4-v2 except for compatibility with older clients. Cipher algorithm and size. Different ciphers have different speeds in different hardwares (ie an AES-NI capable CPU). This is a hard topic to cover as it is up to you to decide Apr 03, 2020 · OpenVPN is a free safe to use & open source software solution for creating a Virtual Private Network (VPN). OpenVPN uses a variety of strong encryption standards to secure your connections over a public network. OpenVPN integrates into PfSense, which is excellent because it gives you a single point of control. May 01, 2017 · TL, DR: If you are building a pfSense box with an x86 chip made in the past ~7 years [1], stop reading and carry on. Those of you on a power budget, and want e.g. VPN support at closer to wire speeds, you're being advised to select a CPU with AES-NI to get hardware crypto offload. port 1025 proto udp dev tun ca ca.crt cert server.crt key server.key # This file should be kept secret dh dh2048.pem server 10.0.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt client-config-dir ccd route 10.0.0.2 255.255.255.252 push "redirect-gateway def1" push "dhcp-option DNS 8.8.8.8" push "dhcp-option DNS 8.8.4.4" client-to-client It is good that OpenSSL and OpenVPN can use AES-NI, but I was referring to that OpenVPN by default uses Blowfish and not AES, which is not supported by AES-NI if I am not mistaken. So in order to use the hardware engine one would have to manually change the config to use "cipher aes-128-cbc" or a similar supported cipher.

I had been keeping my eyes open for a PC to become available that had a CPU with AES-NI support. I wanted to flash it with pfSense to see how OpenVPN performance compared with my Asus RT-AC88U. Eventually, I was able to obtain a Windows 7 PC with an Intel i5-3450 CPU @ 3.10GHz x 4 cores with AES-NI.

OpenSSL ＋ AES-NIパッチを使用する 次のチューンナップとして、OpenVPN 2.1.4とIntel AES-NIパッチ適用済のOpenSSL 1.0.0aをリンクさせてみます。このパッチはFedora 12以降にはデフォルトで組み込まれています。 Finally OpenVPN previously forked *after* initializing OpenSSL, which is arguably a bad choice. We'll fix the init order in OpenVPN. FreeBSD and/or OpenSSL should fix the weird default AES-NI/cryptodev behaviour, instead of asking all their users to work around it.

Hi, Thanks for your reply. I know that OpenVPN is single-threaded. But I expect more than 5MB/s on a CPU with 1,6/2,6 GHz and AES-NI support though. Consider that the OpenSSL speed benchmark showed that it's able to encrypt between 100 and 300 MB/s, even in the virtualized environment.

Oct 03, 2018 · The second tweak made was to relink OpenVPN 2.1.4 using the OpenSSL 1.0.0a libraries with the Intel AES-NI patch applied. This patch is included by default in Fedora 12 and higher. Previously it was reported that the Intel AES-NI patch caused the performance on non-AES-NI capable hardware to improve by a factor of 2. OpenVPN¶ To take advantage of acceleration in OpenVPN, choose a supported cipher such as aes-128-cbc on each end of a given tunnel, then select BSD Cryptodev Engine for Hardware Crypto. Similarly, if the system employs the VIA Padlock engine, choose an appropriate cipher and select VIA Padlock for Hardware Crypto.