Below are parameters that may be needed to configure your corporate firewall for
Citrix access to Tallgrass’ Customer Activities site.

Citrix connectivity (revised 11/13/2013):
   IP: 192.222.104.76 - Citrix Primary Site
   IP: 192.222.106.76 - Citrix Primary Disaster Recovery Failover Site
   IP: 192.222.108.2   - Citrix Secondary Site

For all Citrix clients versions, each IP should be associated with ports TCP 80, 1494, 2598, 8080.