How To
Summary
How to Stop and Disable Firewall on a VM
Steps
A user lost network connectivity to their environment after installing firewall. To regain access, we need to stop and disable firewall via VNC console.
1. Access the VM using VNC Console as itzuser
- Log in to the VM through the VNC console with the itzuser account.
2. Check the History for Firewall Installation
- Review the command history to determine that the user installed firewalld.
3. Stop the firewalld Service
- Run the following command to stop the firewalld service: sudo systemctl stop firewalld
4. Disable the firewalld Service
- Run the following command to disable
firewalld from starting automatically on boot: sudo systemctl disable firewalld5. Check SSH Connection
- Verify if SSH is now working by attempting to reconnect via SSH.
-After stopping and disabling firewalld, SSH access should be restored.
You can let the user know that the firewall has been disabled.
Document Location
Worldwide
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Document Information
Modified date:
14 April 2025
UID
ibm17230864