C o n f i g u r e D i g i d e v i c e s

Upload an SSH public key

SSH can be configured to log into to servers without having to provide a password. This is called “public key authentication” and is more secure than using a normal password. You generate a public/private key using a program called ssh-keygen, and store a copy of the public key on the server(s) that you wish to use for authentication. When you attempt to log in, the server sends you a message encrypted with your public key. Your machine decrypts it and sends back the original message, proving your identity.

To upload an SSH public key:

1On the Main menu, click Security.

2On the Security Configuration page, check the Enable SSH public key

authentication check box.

3Type or paste the SSH public key in the edit box.

4Click Apply.

Disable unused and non-secure network services

Depending on your mobile service provider, other users can access your Digi device device over the Internet, through various network services enabled on your Digi device. To further secure the Digi device, network services not necessary to the device, particularly non-secure or un-encrypted network services such as Telnet, can be disabled. See "Network services settings" on page 82.

Use IP filtering

You can better restrict your device on the network by only allowing certain devices or networks to connect. This is known as IP filtering or Access Control Lists (ACL). IP filtering configures a Digi device to accept connections from specific and known IP addresses or networks only, and silently drop other connections. Digi devices can be filtered on a single IP address or restricted as a group of devices using a subnet mask that only allows specific networks to access to the device. IP Filtering settings are a part of the Network configuration settings. See "IP filtering settings" on page 90.

Important: Plan and review your IP filtering settings before applying them. Incorrect settings can make the Digi device inaccessible from the network.

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Digi X4, X8, X2 manual Upload an SSH public key, Disable unused and non-secure network services, Use IP filtering
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X4, X8, X2 specifications

Digi X2 and X1 are advanced cellular IoT (Internet of Things) gateways that provide an innovative solution for industrial applications, smart cities, and remote asset management. Both devices equip users with the means to connect, monitor, and control a wide variety of assets without the limitations traditionally imposed by wired connections.

Digi X2, designed for complex IoT demands, features dual SIM slots which ensures uninterrupted connectivity through automatic failover. This makes it particularly valuable for critical applications where connectivity is non-negotiable. Additionally, the X2 is equipped with LTE-M and NB-IoT support, enabling extensive coverage in areas where other networks may struggle.

On the software side, the Digi X2 supports Digi Remote Manager, a powerful tool that allows users to monitor, manage, and deploy devices remotely. This cloud-based management system simplifies the overall management of IoT devices by providing real-time insights, easy configuration changes, and over-the-air updates, saving both time and resources.

In contrast, the Digi X1 serves as an entry-level model that balances performance with cost-effectiveness. It supports LTE connectivity, providing a reliable connection suitable for a variety of applications. The X1 also offers seamless integration with existing networks, allowing users to leverage their current infrastructure while expanding their IoT capabilities.

Both Digi X2 and X1 are designed with ruggedness in mind, making them suitable for deployment in harsh environments. They are engineered to withstand extreme temperatures and vibrations, ensuring reliability even in demanding industrial settings.

Another notable characteristic of these devices is their extensive input/output (I/O) capabilities, which enable them to interact with sensors, machines, and other types of devices. This versatility allows for a broad spectrum of applications, from monitoring temperatures in remote locations to tracking assets across geographic boundaries.

In summary, the Digi X1 and X2 provide robust, reliable, and scalable solutions for modern IoT implementations. With their advanced cellular connectivity, cloud management capabilities, and durable design, they are poised to enhance connectivity across industries, driving efficiencies and enabling smarter operations. Whether for critical industrial applications or efficient asset management, Digi's offerings are tailored to meet the diverse needs of today's IoT landscape.
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