How-To Check Network Connections to VMs

Last Updated: November 18, 2025

Introduction

Checking network connections to VMs involves several steps to ensure that the VM is reachable and the network configurations are correct.

Step-by-Step Instructions

1. Verify VM status
   Ensure that the VM is in running state. You can check this using the Crusoe Cloud console or the command-line. for UI go to Crusoe Cloud GUI > Instances , or use the below command

   crusoe compute vms list

2. Check Network Configuration
   Ensure the VM has the correct network configuration (IP address, subnet, firewall rules, etc.), go to Crusoe Cloud GUI > Networking

3. Ping the VM
   Use the ping command to check if the VM is reachable from your local machine or another machine in the same network. Remember, you need to enable icmp firewalls as Crusoe does not enable icmp protocol by default. To enable icmp go to Crusoe Cloud GUI > Networking > Firewall rules>Create Firewall Rule
    

   ping <VM_IP_Address>

4. Use Network Diagnostic Tools

   Traceroute: Use traceroute to trace the path packets take to reach the VM.

   traceroute <VM_IP_Address>

   Netstat: Use netstat on the VM to check active connections and listening ports

   netstat -tuln

5. Check Open Ports
   Use tools like telnet or nc (netcat) to check if specific ports are open on the VM.

   Telnet

   telnet <VM_IP_Address> <Port>

   Netcat

   nc -zv <VM_IP_Address> <Port>