The below error appears in the SSG log
2018-08-27T16:45:00.120-0400 SEVERE 12875 com.l7tech.server.SoapMessageProcessingServlet: Cookie name "AMC_EZ673B6524DA1BC0A4905C9@CAdobeorg" is a reserved token
The 'Cookie name' may differ in your environment.
The @ is considered reserved token, along with some other characters defined in Section 2.2 of RFC2616.
The issue is caused by the 'Decode ID Token' assertion when it hits a cookie containing special characters.
To resolve the handling of these characters:
1) Log into the Gateway via ssh
2) Navigate to and edit the file /opt/SecureSpan/Gateway/node/default/etc/conf/system.properties
3) Add the following line
4) Save the file and restart the Gateway service