Cannot Dial a Dynamic Rule Error Message – What it means


Zyxel security appliances generate this type of error message.
For example, If you try to connect a VPN tunnell using the Zyxell 35 GUI screen, by clicking on the CONNECT button (arrow pointing up), and you get an error message: “Cannot Dial a Dynamic Rule” DON’T worry; The firewall is only trying to tell you that it does not know the ip address of the client on the other side of the tunnel. That is WHY you need to establish the connection from the client side instead. The client ALWAYS knows what its own IP is!

In this example the firewal has a static IP and the VPN client can be pretty much any IP, so the word “Dynamic” here really means “ANY IP” coming from the client PC somewhere in the “ETHER” cloud.

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