Digital Ocean Load Balancer Firewall How to Apply

I want to make my DO Loadbalancer can only be accessible via and my internal droplet backend, how can do that? Please assist me, sensei!

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Is there a quick way to deny all IP traffic rather than list all the IPs in --deny-list? I don’t have a list of all possible IP address in the world, I just want to deny everything and whitelist a few address that I need. How can the be accomplished via the CLI?

Thank you -

Bobby Iliev
Site Moderator
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October 26, 2023

Hi there,

Currently, you can only add firewall rules to a load balancer using the CLI or API.

To add or remove firewall rules from an existing load balancer using the CLI, use the --allow-list and --deny-list flags with the update command to define a list of IP addresses and CIDRs that the load balancer will accept or block incoming connections from.

To add or remove firewall rules via the command-line, follow these steps:

  1. Install doctl, the DigitalOcean command-line tool.

  2. Create a personal access token, and save it for use with doctl.

  3. Use the token to grant doctl access to your DigitalOcean account.

    doctl auth init


  4. Finally, add or remove firewall rules with doctl compute load-balancer update. The basic usage looks like this, but you’ll want to read the usage docs for more details:

    doctl compute load-balancer update <id> [flags]

You can find the full documentation here:

Hope that this helps!



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