When the Access Profile Type is LTM+APM and it is not using any connectivity resources (such as Network Access, Portal Access, etc.) in the VPE, the F5 BIG-IP appliance must be configured to enable the HTTP Only flag.

To guard against cookie hijacking, only the BIG-IP APM controller and client must be able to view the full session ID. Setting the APM HTTP Only flag ensures that a third party will not have access to the active session cookies. This option is only applicable to the LTM+APM access profile type. Other access profile types require access to various session cookies to fully function. Sites must conduct operational testing prior to enabling this setting. For implementations with connectivity resources (such as Network Access, Portal Access, etc.), do not set BIG-IP APM cookies with the HTTP Only flag.