USG Flex 500H OpenVPN very slow

JJ9231
JJ9231 Posts: 2
First Comment
in USG FLEX H Series

Installed USG Flex 500H quite standard with SSL VPN and using OpenVPN: Upload large file from device to server - about 0.5 - 1 Mb/Sec. Download about 3 - 4 Mb/Sec.

Are there any special settings to achieve available bandwidth?

Accepted Solution

  • Zyxel_Emily
    Zyxel_Emily Posts: 1,396  Zyxel Employee
    Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate 100 Answers 1000 Comments
    Answer ✓

    Hi @JJ9231,

    Here is the official test report for your reference. You can disable security policy and all security services to check the throughput again.

    Using HTTP protocol to get 700M ZIP file from a server.
    SSL VPN (AES) throughput on USG FLEX 500H with firmware 1.20 is around 239.5 Mbps.
    (Security policy, Security services, BWM, DOS, Session control are disabled.)

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All Replies

  • Zyxel_Emily
    Zyxel_Emily Posts: 1,396  Zyxel Employee
    Zyxel Certified Network Administrator - Security Zyxel Certified Sales Associate 100 Answers 1000 Comments
    Answer ✓

    Hi @JJ9231,

    Here is the official test report for your reference. You can disable security policy and all security services to check the throughput again.

    Using HTTP protocol to get 700M ZIP file from a server.
    SSL VPN (AES) throughput on USG FLEX 500H with firmware 1.20 is around 239.5 Mbps.
    (Security policy, Security services, BWM, DOS, Session control are disabled.)

    Untitled Image

    See how you've made an impact in Zyxel Community this year!
    https://bit.ly/Your2024Moments_Community

  • JJ9231
    JJ9231 Posts: 2
    First Comment

    Hi Zyxel_Emily, thank you.

  • PeterUK
    PeterUK Posts: 3,457  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary
    edited May 23

    my Flex 200H OpenVPN is also slow can't hit past even 30Mb on a LAN test

    disable policy control goes upto 70Mb

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