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    Performance if I'm using AES-NI to VPN Provider via OpenVPN?

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    • T
      tontoOz
      last edited by

      What happens, in terms of performance, if I am using a router which has a Rangely CPU that supports AES-NI/AES-GSM and use OpenVPN in my router to connect to a VPN Provider's OpenVPN server, assuming the VPN Provider's hardware doesn't support AES-NI/AES-GCM? Would I get any speed benefit from AES-NI at all?

      I ask this because since around January pfSense 2.2 (and FreeBSD 10.1) have implemented support to take advantage of AES-NI and AES-GSM. However, it is probably unlikely that VPN providers such as AirVPN/NordVPN/TorGuard will have updated their OpenVPN servers yet to hardware that can use AES-NI/AES-GCM.

      [EDIT. Oops, it may be that pfSense supports AES-NI/AES-GCM for IPSEC but not OpenVP? Does anyone know if that's so?]

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      • C
        cmb
        last edited by

        OpenVPN doesn't yet support AES-GCM, so the benefits of AES-NI are more limited with it. The AES CBC modes will take some advantage of it.

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