How should I configure my firewall for Rublon MFA?

Rublon MFA is a sophisticated Multi-Factor Authentication solution encompassing many applications and connectors. All applications and connectors connect to the Rublon API using TCP port 443. Rublon MFA is hosted on Amazon Web Services (AWS) and uses static IP addresses for Rublon Authentication Proxy, Rublon Admin Console, and Rublon Prompt, among others. To ensure your firewall is not blocking Rublon MFA, read this article. Check out the Helpful Links section for related articles and additional tips on configuring your firewall for Rublon MFA.

1. Open TCP Port 443

Open Outbound Port 443 on your firewall for https://core.rublon.net/ to allow your Rublon MFA-enabled applications and connectors to connect to the Rublon API. This is usually sufficient and most customers do not have to do anything else. However, if you have stringent firewall rules in place or still experience issues even though you opened Outbound Port 443, read on to learn what else you can do to configure your firewall for Rublon.

2. Add Rublon MFA IP Addresses to Your Allowlist

Here are the IP addresses Rublon MFA uses.

3. Add IP Addresses Rublon MFA Sends Emails From

Here are the IP addresses Rublon MFA sends emails from.

Helpful Links

What are Rublon MFA's IP ranges?

What to do if I opened Outbound Port 443 but still cannot connect to the Rublon API?

Which IP addresses does Rublon MFA send emails from?

What happens if Rublon MFA servers become unavailable?