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

userguide image24_firewall

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.

userguide image25_firewall_message