SSH Problem in Jetson Orin Nano

Issue Overview

Users are experiencing difficulties connecting their laptops to the Nvidia Jetson Orin Nano via SSH. The primary symptoms include:

• Failed SSH Connection: Users report that SSH does not work despite enabling the SSH port and automatic login on the Jetson device.
• Ping Issues: Attempts to ping the Jetson from the laptop are unsuccessful.

This problem typically occurs during the setup phase when users are trying to establish a remote connection to the Jetson Orin Nano. Relevant hardware specifications include the Jetson Orin Nano and a host computer (often running Linux), although specific models or configurations of these devices were not mentioned.

The issue appears to be consistent, as multiple users have reported similar experiences. The inability to connect via SSH significantly impacts user experience, as it limits remote access and control over the Jetson board. Understanding the network configuration and any potential security measures in place is crucial for diagnosing this problem.

Possible Causes

Several potential causes may lead to the observed SSH connectivity issues:

• Hardware Incompatibilities: There may be issues with network interfaces or cables that prevent proper communication between devices.

• Software Bugs or Conflicts: The operating system or SSH service on either device may have bugs or conflicts that hinder connectivity.

• Configuration Errors: Incorrect settings related to network configurations (e.g., IP addresses, subnet masks) could lead to connectivity issues.

• Driver Issues: Outdated or incompatible network drivers on either device could affect communication.

• Environmental Factors: Issues such as network firewalls, security settings, or misconfigured routers/switches could block SSH traffic.

• User Errors or Misconfigurations: Users may have overlooked necessary configurations, such as ensuring both devices are connected to the same network.

Troubleshooting Steps, Solutions & Fixes

To resolve the SSH connectivity issue, follow these comprehensive troubleshooting steps:

1. Verify Local Login:

   • Log in directly to the Jetson Orin Nano.
   • Execute the following commands to check network configuration:

     ifconfig
     route
     

   • Note the output for further analysis.

2. Check Host Computer Configuration:

   • On your laptop, run the same commands (ifconfig and route) and compare outputs.
   • Ensure both devices are on the same subnet.

3. Network Connectivity:

   • Confirm that both devices are connected to the same router or switch.
   • If using a company network, check for any firewall restrictions that might block SSH traffic.

4. Test Ping Functionality:

   • From your laptop, attempt to ping the Jetson using its IP address:

     ping <Jetson_IP_Address>
     

   • If this fails, there may be a deeper network issue.

5. Firewall Settings:

   • Check firewall settings on both devices. Ensure that port 22 (default for SSH) is open.
   • On Linux systems, you can check firewall status with:

     sudo ufw status
     

6. SSH Service Check:

   • Ensure that the SSH service is running on the Jetson:

     sudo systemctl status ssh
     

   • If it is not active, start it with:

     sudo systemctl start ssh
     

7. Router/Switch Configuration:

   • Verify that your router/switch does not have any settings that could block internal communication between devices.

8. Driver Updates:

   • Check for any available updates for network drivers on both devices and apply them if necessary.

9. Reboot Devices:

   • Sometimes a simple reboot of both the Jetson and host computer can resolve temporary glitches.

10. Documentation & Resources:

    • Refer to Nvidia’s official documentation for additional guidance on setting up SSH on Jetson devices.
    • Consider checking for firmware updates for your router/switch if connectivity issues persist.

11. Best Practices:

    • Always ensure both devices are configured correctly before attempting an SSH connection.
    • Maintain updated software and drivers to minimize compatibility issues.

If multiple users have reported success with specific steps (e.g., ensuring both devices are on the same subnet), these should be highlighted as recommended approaches.

Note any unresolved aspects of this issue may require further investigation into specific network configurations or environmental factors affecting connectivity.