Digi ConnectPort X4 User's Guide download pdf (Page 70)

Configuration through the web interface

IP filtering settings

You can better restrict your device on the network by only allowing certain devices or networks to

connect. This is better known as IP Filtering or Access Control Lists (ACL). By enabling IP

filtering, you are telling the device to only accept connections from specific and known IP

addresses or networks. Devices can be filtered on a single IP address or can be restricted as a group

of devices using a subnet mask that only allows specific networks to access to the device.

Caution

It is important to plan and review your IP filtering settings before applying

them. Incorrect settings can make the Digi device inaccessible from the

network.

IP Filtering Settings settings include:

 Only allow access from the following devices and networks: Enables IP filtering so

that only the specified devices or networks are allowed to connect to and access the

device. Note that if you enable this feature and the system from which you are

connecting to the Digi device is not included in the list of allowed devices or networks,

then you will instantly no longer be able to communicate or configure the device from

this system.

– Automatically allow access from all devices on the local subnet: Specifies that all

systems and devices on the same local subnet or network of the device should be

allowed to connect to the device.

Allow access from the following devices: A list of IP addresses of systems or

devices that are allowed to connect to this device.

Allow access from the following networks: A list of networks based on an IP

address and matching subnet mask that are allowed to connect to this device. This

option allows grouping several devices that exist on a particular subnet or network

to connect to the device without having to manually specific each individual IP

address.

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Digi ConnectPort X4 User's Guide Page 70