Getting Citrix to work in FIrefox on Ubuntu 13.10

I had trouble getting Citrix to work (with Citrix Reciever) in Firefox on Ubuntu 13.10.

I got error message "SSL Error 61: You have not chosen to trust VeriSign Class 3 Public Primary Certification Authority -G5, the issuer of the server’s security certificate."

As the VeriSign Class 3 Public Primary Certification Authority -G5 certificate is already trusted in Firefox the fix for this was a simple as a symlinc to share Firefox's certificates with Citrix:

sudo ln -s /usr/share/ca-certificates/mozilla/* /opt/Citrix/ICAClient/keystore/cacerts