WHAT IS A FIREWALL AND WHICH ONE SHOULD I CHOOSE?
A firewall is a tool that prevents 3rd-party connection to your VM using a specific ruleset. It can operate under 3 modes:
- Unprotected mode (Firewall off): All connections to your VM are allowed (incoming and outgoing). This is the default mode.
- Fully protected mode (Firewall on): No connection to your VM is allowed. The only way to connect to your VM is by using the console.
- Basically protected mode (Firewall on): No incoming connections are allowed. Only port 22 (SSH) and 3389 (RDP) is open.
You can set the mode you prefer from the Cyclades UI, as seen in the picture below
Keep in mind that the firewall update is finished only after you reboot your VMs. There should also be a message in the UI informing you about this.
CYCLADES USER GUIDE
- How to create a VM?
- How do I connect to a VM?
- How do I manage my VM?
- How can I resize the CPU/RAM of an existing VM?
- How can I attach/detach an IP on a running VM?
- How can I add extra disks to my VMs?
- How can I detach an extra disk from a VM?
- How can I add tags to my VMs?
- How can I assign my VM to a project?
- What are SSH keys and how can I use them?
- What are private networks?
- What is a firewall and which one should I choose?
- How can I access all my VMs using one public IP (NAT)?
- How can I add IPv6 nameservers on my CentOS/Oracle Linux VM?