Probleme with our Site 2 Site VPN


we established a site to site vpn from our collocation to our new office.

But we cannot ping from any side to the other.

The IP Adresses in the Office are in our Collocation

did anyone have an idea what we made wrong?


  • AlfonsoAlfonso Member Posts: 143  Ally Member
    Hi @Rainbowm

    Welcome to the forum.

    If VPN is up, I suggest verifying if pings reached the server (It can be done with a sniffer).

    Please, give us more information to try to help you.


  • RainbowmRainbowm Member Posts: 2
    edited December 1, 2018 1:44AM

    the ping isnt reach his destination.

    i make screenshots from out configs, may it helps.


    In the Collocation we use a ZyWall 100 - Firmware: 4.13
    In the Office we use a Zywall 310 - Firmware 4.25

    I know the encryption is low, i will bring them up if it works.
  • AlfonsoAlfonso Member Posts: 143  Ally Member
    Hi @Rainbowm

    I suggest watching the following video

  • Zyxel_EmilyZyxel_Emily Zyxel Official Agent Posts: 269  mod

    Hi @Rainbowm,


    It may be blocked by security policy rule. Try to disbale firewall rule on both sites temporarily and try it again.

    If 1:1 NAT rules are configured on ZyWALL, check if Network > NAT > "Use Static-Dynamic Route to Control 1-1 NAT Route" is enabled.

    If the issue is still not resolved, please share the configruation file of both ZyWALL 310 and ZyWALL 1100 with us to check what the root cause is.

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