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Configuring Firewall Whitelisting
Published: Jan 31, 2018   -   Updated: Jun 22, 2018




Configuring Firewall Whitelisting

If your server policy allows all outbound http/https communication to any IP address or website, you do not need to make any changes. However, if your server policy denies access to most or all external IP addresses and websites, you must configure a whitelist to enable some features to work. A whitelist provides access to specified IP addresses and programs when your Security policy would otherwise prevent that access.

For domain, port, and troubleshooting information, see Implementation Details below.

Okta IP Addresses

In order to ensure connectivity to Okta for all Okta agents and end users, please add the following Okta system IP addresses to your whitelist.



Production EMEA (Europe)


Production HIPAA




Preview EMEA (Europe)



Implementation Details

The following information helps you configure whitelisting for your orgs.

Okta IP range notation

The IP ranges listed in this document are provided in Classless Inter-Domain Routing (CIDR) notation. For more information on CIDR, see the Classless Inter Domain Routing.


The Okta service uses SSL/TLS for all communication. If your policy requires a port number, port 443 must be whitelisted for the IP addresses provided in this document, unless otherwise noted.

Required Okta Domains

If your company whitelists domains, add the following domains to your list of allowed domains:


Content Delivery Network (CDN)

Okta's static UI assets (JavaScript, CSS and images) can be delivered to browsers through an international CDN rather than dedicated servers located in the United States. This allows assets to download much faster, especially for customers outside of the U.S.

For most firewall or proxy systems, we recommend that you specify a whitelist of DNS addresses for Okta services so that outbound connections can be made. For a list of current IP ranges for the content delivery network (CDN), refer to the Amazon Web Services site.

Certificate Revocation Troubleshooting

Various problems can arise when attempting to revoke a certificate. For example, some clients will fail to connect to SSL/TLS endpoints when they are unable to reach a revocation server. If you experience trouble with certificate revocation, ensure that you have the following domain names whitelisted under port 80:


Third Party Services

Okta Mobile may require whitelisting of the following third party domains for outbound connections to these services: