Date Published: February 24, 2022
SSO and SimpleSAMLphp Configuration for CDNs
Please note: The below example relates to the Acquia Cloud Edge CDN. For details on troubleshooting redirect loops for Cloud Platform CDN, please see our Cloud Platform CDN documentation
A redirect loop can occur when a user tries to authenticate with SSO/SAML but because of the presence of a cache or CDN which is not set to bypass the cache on the presence of the SAML cookie(s). SimpleSAMLPHP uses a cookie starting with 'SimpleSAML', so bypasing the cache for 'SimpleSAML.*' should avoid any issues. See below for an example Page Rule
Redirect loops can also be caused by a redirect switching from http to https, refer to the
SimpleSAMLphp debugging documentation as well as the
Troubleshooting SimpleSAML article.
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