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    Slow IPSec Connection

    Scheduled Pinned Locked Moved IPsec
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    • T
      Tenou
      last edited by

      Hey there,
      I'm using IPSec Tunnels to connect multiple remote locations to my main network.
      Unfortunatly, the speeds I'm getting are really low. My internet connection is 100Mbit/s down and 45Mbit/s up.
      For my remote location it's 400Mbit/s down and 45Mbit/s up. So it should be possible to get a file transfer to speeds of around 40Mbit/s.
      Unfortunatly, in reality it's 5-8Mbit/s. Connection locally to the nas results in speeds of >10Gbit/s, so the NAS shouldn't be the problem ;)
      CPU & RAM utilization is also very low, at around 1-10% for both.

      Phase 1 config:
      IKEv1
      Proposal: AES256, SHA1, DH14.

      Phase 2 config:
      ESP
      AES256
      SH1, PFS14

      Are the slow speeds results of the (really not great) configuration? I unfortunatly can't change that because of compatibility limitations. Would just love to try everything else before buying a new router.

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      • DerelictD
        Derelict LAYER 8 Netgate
        last edited by Derelict

        What kind of transfer? What is the latency across the tunnel? How exactly are you measuring throughput?

        AESGCM will generally be faster overall than AES. Change the Phase 2 to AESGCM without a hash.

        Chattanooga, Tennessee, USA
        A comprehensive network diagram is worth 10,000 words and 15 conference calls.
        DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
        Do Not Chat For Help! NO_WAN_EGRESS(TM)

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