How do I configure my firewall for api.access.redhat.com?

Solution Verified - Updated 1 Dec 2025

Environment

Any environment with restrictive outbound firewall rules.
Clients needing to connect to api.access.redhat.com or cert-api.access.redhat.com
Red Hat Access tools

Issue

Firewall is blocking api.access.redhat.com

Resolution

Add firewall rules allowing clients to access the following CIDR blocks and subscribe to this solution for any updates.

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Reach out to Red Hat Technical Support in case of any further questions or concerns.

Root Cause

Red Hat uses content distribution networks in order to ensure global quality of service. Therefore, the host names api.access.redhat.com and cert-api.access.redhat.com can resolve to any one of the listed IPs above.

Diagnostic Steps

Determine if your firewall is blocking HTTPS requests to api.access.redhat.com

    $ nmap -p 443 api.access.redhat.com

     Starting Nmap 5.51 ( http://nmap.org ) at 2014-08-27 11:09 EDT
     Host is up (0.0087s latency).
     PORT    STATE  SERVICE
     **443/tcp closed https**

     Nmap done: 1 IP address (1 host up) scanned in 0.17 seconds

SBR

Insights

Product(s)

Red Hat Lightspeed

Components

firewalld

Category

Learn more

Tags

firewall

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