Merge pull request #51687 from Rupesh-git-eng/patch-5

Update configuring-firewall.adoc

Author: kalexand-rh

modules/configuring-firewall.adoc

@@ -38,17 +38,13 @@ There are no special configuration considerations for services running on only c
 |443, 80
 |Provides core container images
 
-|`cdn03.quay.io`
-|443, 80
-|Provides core container images
-
 |`sso.redhat.com`
 |443, 80
 |The `https://console.redhat.com/openshift` site uses authentication from `sso.redhat.com`
 
 |===
 +
-You can use the wildcards `\*.quay.io` and `*.openshiftapps.com` instead of `cdn0[1-3].quay.io` in your allowlist. When you add a site, such as `quay.io`, to your allowlist, do not add a wildcard entry, such as `*.quay.io`, to your denylist. In most cases, image registries use a content delivery network (CDN) to serve images. If a firewall blocks access, then image downloads are denied when the initial download request is redirected to a hostname such as `cdn01.quay.io`.
+You can use the wildcards `\*.quay.io` and `*.openshiftapps.com` instead of `cdn0[1-2].quay.io` in your allowlist. When you add a site, such as `quay.io`, to your allowlist, do not add a wildcard entry, such as `*.quay.io`, to your denylist. In most cases, image registries use a content delivery network (CDN) to serve images. If a firewall blocks access, then image downloads are denied when the initial download request is redirected to a hostname such as `cdn01.quay.io`.
 
 . Allowlist any site that provides resources for a language or framework that your builds require.