Digi Connect IT 16

Digi Connect IT 16

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Virtual Private Networks (VPN)

Virtual Private Networks (VPNs) are used to securely connect two private networks together so that

devices can connect from one network to the other using secure channels.

This chapter contains the following topics:

IPsec 234

OpenVPN 270

Generic Routing Encapsulation (GRE) 300

NEMO 320

Digi Connect IT® 16/48 User Guide

233

Table of Contents

Default Chapter9
- Table of Contents9
Digi Connect IT® 16/48 User Guide18
- Connect IT 16 and 48 Key Features18
Get Started with Connect IT 16/4819
- Verify Product Components19
- Cellular ONLY: Insert the CORE Module22
  - Prerequisites22
- Connect the Power Supplies and Fans23
- Optional: Connect SFP+ Modules24
- Connect the Hardware24
  - Connect Hardware and Connect to Site Network Using an Ethernet LAN24
  - Connect Hardware and Connect to a Cellular Network25
- Manually Configure PC to Connect to the Connect IT25
Connect Equipment to the Connect IT Serial Ports27
- Serial Connector Pinout27
Configuration and Management29
- Review Connect IT 16/48 Default Settings29
- Change the Default Password for the Admin User31
- Configuration Methods32
- Using Digi Remote Manager34
- Access Digi Remote Manager34
- Using the Web Interface34
  - Log out of the Web Interface35
- Using the Command Line36
- Access the Terminal Screen from the Web UI36
- Log into the Connect IT from the Console Port37
- Access the Command Line Interface37
- Log in to the Command Line Interface37
- Exit the Command Line Interface38
Configure Remote Power Management39
- Configure Communication between the Connect IT, Power Controller, and a Device39
- Create an Access Control to Specify Which Users Can Access Which Outlets39
- Manage Power to the Power Controller Outlets39
- Configure the Connect IT to Connect to a Power Controller Using a Serial Port40
- Configure the Connect IT to Connect to a Power Controller Using the Network43
- Create an Access Control Group for Power Management and Assign to Users45
- Manage the Power to the Power Controller Outlets from the Connect IT46
Interfaces49
- Wide Area Networks (Wans)50
- Local Area Networks (Lans)116
- Bridging152
  - Edit the Preconfigured ETH2 Bridge153
  - Configure a Bridge156
Serial Port161
- Add a USB Console Port166
- Show Serial Status and Statistics180
- Serial Status Page181
- Search for a Port183
- Serial Connector Pinout in Reversed Mode183
Console Port184
- Configure the Console Port184
Routing186
- IP Routing187
- Show the Routing Table204
- Dynamic DNS205
  - Configure Dynamic DNS205
- Virtual Router Redundancy Protocol (VRRP)210
Virtual Private Networks (VPN)233
- Ipsec234
- Openvpn270
- Generic Routing Encapsulation (GRE)300
- Nemo320
  - Configure a NEMO Tunnel320
  - Show NEMO Status326
Services329
- Allow Remote Access for Web Administration and SSH329
- Configure the Web Administration Service332
- Configure SSH Access341
- Use SSH with Key Authentication347
  - Generating SSH Key Pairs347
- Configure Telnet Access349
- Configure DNS353
- Simple Network Management Protocol (SNMP)361
- Location Information367
- Modbus Gateway396
  - Configure the Modbus Gateway397
  - Show Modbus Gateway Status and Statistics410
- System Time413
- Configure the System Time413
- Network Time Protocol415
- Configure the Device as an NTP Server416
- Configure a Multicast Route422
- Ethernet Network Bonding425
- Enable Service Discovery (Mdns)427
- Use the Iperf Service431
  - Example Performance Test Using Iperf3435
- Configure the Ping Responder Service436
  - Example Performance Test Using Iperf3439
Applications442
- Configure Applications to Run Automatically442
  - Task One: Upload the Application442
  - Task Two: Configure the Application to Run Automatically444
- Run a Python Application at the Shell Prompt448
- Start an Interactive Python Session450
- Digidevice Module451
- Use the Human Interface Device (HID) Module476
  - Help for the Hid Module477
- Use Python to Access Serial Ports478
- Use the Paho MQTT Python Library479
- Use the Local REST API to Configure the Connect IT 16/48 Device482
- Stop a Script that Is Currently Running486
- Show Script Information487
User Authentication490
- Connect IT 16/48 User Authentication490
- User Authentication Methods490
- Authentication Groups497
- Local Users506
- Terminal Access Controller Access-Control System Plus (TACACS+)518
- Remote Authentication Dial-In User Service (RADIUS)524
- Ldap529
- Disable Shell Access537
- Set the Idle Timeout for Connect IT 16/48 Users538
- Example User Configuration540
  - Example 1: Administrator User with Local Authentication540
  - Example 2: RADIUS, TACACS+, and Local Authentication for One User542
Firewall553
- Firewall Configuration553
- Port Forwarding Rules557
  - Configure Port Forwarding557
  - Delete a Port Forwarding Rule562
- Packet Filtering564
- Configure Custom Firewall Rules571
- Configure Quality of Service Options573
System Administration586
- Review Device Status586
- Configure System Information587
- Update System Firmware589
- Update Cellular Module Firmware593
  - Update Modem Firmware over the Air (OTA)594
  - Update Modem Firmware by Using a Local Firmware File596
- Reboot Your Connect IT 16/48 Device597
  - Reboot Your Device Immediately598
  - Schedule Reboots of Your Device598
- Erase Device Configuration and Reset to Factory Defaults599
  - Configure the Connect IT 16/48 Device to Use Custom Factory Default Settings602
- Configuration Files605
- Schedule System Maintenance Tasks610
- Disable Device Encryption617
  - Re-Enable Cryptography after It Has Been Disabled618
- Configure the Speed of Your Ethernet Ports619
Monitoring623
- Intelliflow623
- Configure Netflow Probe630
Central Management636
- Digi Remote Manager Support636
- Configure Digi Remote Manager636
- Collect Device Health Data and Set the Sample Interval642
- Log into Digi Remote Manager644
- Use Digi Remote Manager to View and Manage Your Device646
- Add a Device to Digi Remote Manager647
- View Digi Remote Manager Connection Status647
- Use the Digi Remote Manager Mobile App648
- Configure Multiple Devices Using Profiles649
- Learn more649
File System651
- The Connect IT 16/48 Local File System651
- Display Directory Contents651
- Create a Directory652
- Display File Contents653
- Copy a File or Directory653
- Move or Rename a File or Directory654
- Delete a File or Directory655
- Upload and Download Files656
Diagnostics661
- Generate a Support Report661
- View System and Event Logs662
  - View System Logs662
  - View Event Logs664
- Configure Syslog Servers666
- Configure Options for the Event and System Logs668
- Analyze Network Traffic673
- Use the Ping Command to Troubleshoot Network Connections685
  - Ping to Check Internet Connection685
  - Stop Ping Commands685
- Use the Traceroute Command to Diagnose IP Routing Problems685
Hardware687
- Front Panel and Leds687
- Back Panel and Leds689
- Hardware Specifications691
  - Power Supply691
- Electrical Rating691
- Mounting Options692
- Configure the Find Me Feature692
- QR Code Definition692
Troubleshooting693
- Use the RESET Button to Reset Your Device to the Factory Defaults693
- Tips for Improving Cellular Signal Strength693
- Download a Support Report693
Regulatory and Safety Information694
- Safety Warnings694
- Power Supply and Supplemental Fan Module Considerations695
- Information Access695
Command Line Interface697
- Access the Command Line Interface697
- Log in to the Command Line Interface697
- Exit the Command Line Interface698
- Execute a Command from the Web Interface698
- Display Help for Commands and Parameters699
- Auto-Complete Commands and Parameters701
- Available Commands702
- Use the Scp Command703
- Display Status and Statistics Using the Show Command704
- Device Configuration Using the Command Line Interface706
- Execute Configuration Commands at the Root Admin CLI Prompt706
  - Display Help for the Config Command from the Root Admin CLI Prompt706
- Configuration Mode708
- Command Line Reference720

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