Citrix Cloud is implementing additional Points-of-Presence (PoPs) addresses that may affect your access to Kinder Morgan's DART application. Your firewall rules may require updates to allow you to continue to connect to DART. Please notify your IT team about the new requirements.
In the documentation provided by Citrix:
https://support.citrix.com/article/CTX270584/citrix-gateway-service-pointsofpresence-pops
Citrix recommends for HDX traffic the following configuration:
*.nssvc.net (including all sub-domains)
For questions concerning firewall configuration, please contact James “Skip” Stallings at
(713) 369-9067 or james_stallings@kindermorgan.com