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AC68U OpenVPN server question - Router vs NAS

Discussion in 'Asuswrt-Merlin' started by Eric Lieb, Mar 14, 2019.

  1. Eric Lieb

    Eric Lieb Regular Contributor

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    This is a question that I have been wondering about for a while. Is it better to run the OpenVPN server on my AC68U router or on my QNAP 453Be (quad core celeron). Can I run a TAP client on the NAS like I can on the router? The reason I ask is it seems OpenVPN uses a lot of the available resources on the router itself.
     
  2. L&LD

    L&LD Part of the Furniture

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    For ease of use and security, the RT-AC68U is better.

    Use a USB stick and amtm from thelonelycoder to create a swap file for the router to use. Also, make sure to disable the 'regularly flush cache' setting. This will make the router more 'crash-proof' while also giving the most performance it can.

    It's okay if the resources are being used. Are there other processes that that is interfering with?
     
    SMS786 likes this.
  3. maxbraketorque

    maxbraketorque Very Senior Member

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    Are you wanting to access your entire network or just the NAS?
     
  4. Zonkd

    Zonkd Senior Member

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    If he does want to just access the NAS and doesn’t want to access to the entire network, could he still run the VPN server on the router? Or would he have no choice but to run it on the NAS?
     
  5. maxbraketorque

    maxbraketorque Very Senior Member

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    Interesting question. I don't know. The reason I asked is because I was thinking that it would be difficult to access the entire network via an OVPN server on the NAS.
     
  6. Zonkd

    Zonkd Senior Member

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    My Synology NAS has an option to do it. I haven’t tested it though.
     
  7. Eric Lieb

    Eric Lieb Regular Contributor

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    I think QNAP has that option too... wasn't sure if it was a TAP to the network or if it would just be TUN and i wouldn't have access to local resources (like the NAS).
     
  8. coen99

    coen99 Occasional Visitor

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    I had a AC66 having the same issue, lacking CPU power. So I bought the AX88 Quadcore with AES hardware acceleration. This thing is a beast.
    Before the tranferrate using OPENVPN was 12Mb/s with 100% of CPU use (I know, you have a dual core and the 66 has only 1, but still..).
    The AX88 max's out the bandwidth (190Mb/s) and still has enough power left to address all other clients and the harddrive connected to the USB3.
    The only downside is the price of the AX88. But I would buy it again with no hesitation.
     
    Last edited: Mar 15, 2019
  9. L&LD

    L&LD Part of the Furniture

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    I would be interested to see/read about how IPSec VPN works compared to OpenVPN with your new hardware.
     
  10. coen99

    coen99 Occasional Visitor

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    Using L2TP I get 165Mb/s, CPU use : 1-core max 38% (average around 25%)
    If you like to know more let me know.

    AX88 Internet Speed Test -L2TP vpn 2.png AX88 Internet Speed Test -L2TP vpn.png
    cheers
     
    L&LD likes this.
  11. L&LD

    L&LD Part of the Furniture

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    So that I am understanding correctly, L2TP is using IPSec VPN?
     
  12. coen99

    coen99 Occasional Visitor

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    This is what I know/found:

     
    L&LD likes this.
  13. L&LD

    L&LD Part of the Furniture

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    Thank you so much!
     
  14. coen99

    coen99 Occasional Visitor

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    You're welcome!