Network troubleshooting in Linux

Introduction

Allxon requires a specific network for remote device management (e.g. taking screenshots, uploading logs, and updating software). To fully experience our Allxon services, please ensure your device meets the following requirements:

1. 53, 443 & 8883 ports and ping function need to be enabled.
2. Stable network requirement: Upload speed≧1Mbps, Download speed≧5Mbps

If the above requirements are met but the problem still exists. Please delete the network.

Note: “Debian” is the only supported operating system for this network troubleshooting.

Make sure 53, 443 & 8883 ports and ping function are “Enabled”

Proceed with the following methods to test the ports and ping function. If the port is disabled or the ping function is blocked, please enable it, or connect onto another network.

Test port 443/8883/53

1. Open the terminal program on your Linux device and type in the following commands:
• nc -zv adm-rest.allxon.com 443
• nc -zv adm-rest.allxon.com 8883
2. If the ports are opened the test results will follow, as shown below. If the test results fail, please contact your IT department for assistance to help check the port status of your network environment.
   
   
3. Port 53 is used for the Domain Name System (DNS). If the test result for checking ports 443 and 883 pass, this means port 53 is open too.

Test ping function

1. Click on the “Start” button to open the option menu.
2. Find “System Tools” and select “LXTerminal” program.
3. Enter “sudo ping 8.8.8.8” to troubleshoot the ping function.

If the ping function is blocked, it will either show “Host Unreachable” or it will show the following time response data:

Proceed with the following steps to troubleshoot network stability and speed. If network speed does not meet the above requirements, please connect to a stronger network. 

Check the network stability on Allxon Portal

1. Go to the “Devices” page.
2. Select the device you want to check.
3. Find “Connectivity Log” to check it.

If the status switches from “Offline” to “Unknown” frequently, this indicates an unstable network. A stable network will always show “Online.”

Test the network speed on the device

1. Open a browser (e.g. Chromium) and enter http://iinet.speedtestcustom.com/
2. Click on the “GO” button to check network speed (network speed should meet the following requirements: Upload speed≧1Mbps, Download speed≧5Mbps).  

Delete the network if the above solutions don’t work

Make sure both the Wi-Fi SSID/password and the Wi-Fi AP are working. If the Wi-Fi AP appears unstable, restart it and try again later. 

To delete a network, proceed with the following steps on your device:

1. Click the “Start” button to open the option menu.
2. Find “Preferences” and select “Network Connections.”
3. Delete all connected networks.
4. Reconnect to a stronger Wi-Fi.