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Attention: before changing the ACL, we recommend that you create a backup of your device. If you fail to configure ACL rules properly, it is possible that you can lose all access to your Gateway. If this occurs, you will need to do a hardware factory reset and restore the recent backup of your device.
Restrict LAN access to specific services
In your GUI, navigate to "ACL" under "Preferences"
Once In this table you see the following tablecan see the services that will still be available after you restrict access. Deselect "Allow all access from LAN" and click "Save"
To finish, click "activate" and access to the Gateway will be limited the IP-Address you specified.
Restricting port access to a single IP-Adress
If you want to keep a service open and available to another system or computer in your network, you can create a rule to allow this.
First, click "add"
In the next dialog, you can limit access to specific ports used by the gateway to a single IP-Address. In this case, I'm going to limit the Telnet port (used for various Gateway functions) so that it can only be accessed by a computer configured with a specific static IP address.
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