Citrix Linux ICA Certificate issues

When using Linux ICA client you may receive the error
"You have chosen not to trust ..."
Then the client fails to connect. This can be resolved by placing the X509 certificate (with crt extension) into the citrix ICA keystore. From Firefox, highlight and export the CA in DER format. Next rename this file and change the extention to crt. Finally, with admin credentials, copy this file to usr/lib

/ICAClient/keystore/cacerts/. Close and reopen the browser. You can now connect.