If you happen to experience connection errors. Please ask your IT personnel to check the below.
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We recommend exceptions be made for the hostname rather than the IP address as it may change in the future.
Try adding Please add these 3 exceptions for outbound(only outbound is needed) filtering for the host cloud2.thinkcei.com:
- TCP/443
- TCP/3389
- UDP/3391
More information about ports:
• TCP/443 - Required for HTTPS access to remote desktop workplace webpage, cloud2.thinkcei.com
• TCP/3389 - Standard RDP port utilized by terminal services to connect to the RDS session hosts / RDS Farm. The primary RDS transport.
• UDP/3391 - Allows the transport to create that connection.