crypto boost-tcp: how to use it

mMontana
mMontana Posts: 1,297  Guru Member
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With ZLD 5.10 some "boost" of IPsec VPN was delivered to device which had it. So no USG40, USG40W, USG60, USG60W currently, but for USG20-VPN and USG20W-VPN.

How to sensefully use it?
  • Is it useful enable it on only one endpoint if the other one is not capable? Example: USG40 on client side, USG20-VPN on the server side, enable it only on server side could be useful?
  • Is it useful enable it the device is an L2TP server for roadwarriors connections?
Thanks for your time.

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  • CHS
    CHS Posts: 172  Master Member
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    It looks only supprot in 5.10 firmware. The other models without 5.10 version.
    In Site-to-Site scenario, of cause it has to apply in both of devices.
    This command should works in all of VPN tunnel.(Not only site to site VPN)
  • mMontana
    mMontana Posts: 1,297  Guru Member
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    Thanks @CHS, i had the same impression. But I'd love a statement from Zyxel representatives.
  • mjr
    mjr Posts: 26  Freshman Member
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    any updates for the activation of "crypto boost-tcp" in future releases?

  • DimSum
    DimSum Posts: 1
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    edited April 2023

    With ZLD 5.10 some "boost" of IPsec VPN was delivered to device which had it. So no USG40, USG40W, USG60, USG60W currently, but for USG20-VPN and USG20W-VPN.
    How to sensefully use it?

    • Is it useful enable it on only one endpoint if the other one is not capable? Example: USG40 on client side, USG20-VPN on the server side, enable it only on server side could be useful?
    • Is it useful enable it the device is an L2TP server for roadwarriors Sonic exe connections?

    Thanks for your time.

    But how to turn it on?

  • mjr
    mjr Posts: 26  Freshman Member
    First Anniversary 10 Comments Friend Collector

    https://support.zyxel.eu/hc/en-us/articles/4451699825938-Firewall-Increasing-Throughput-Speed-Boost-for-WAN-and-VPN

  • mjr
    mjr Posts: 26  Freshman Member
    First Anniversary 10 Comments Friend Collector

    How to enable/disable the enhancement:

    To enable the enhancement by CLI command, use:

    Router(config)# crypto boost-tcp
    

     

    To disable the enhancement by CLI command use:

    Router(config)#no crypto boost-tcp
    

     

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