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ANS-C01 · Question #86

A company wants to use thin clients running virtual desktops to replace 500 desktop computers used by its call center employees. The company is evaluating Amazon WorkSpaces as a solution. A network…

The correct answer is B. Update the company's corporate firewall to allow outbound access to UDP on port 4172 and TCP. To connect to your WorkSpaces, the network that your Amazon WorkSpaces clients are connected to must have certain ports open to the IP address ranges for the various AWS services (grouped in subsets). These address ranges vary by AWS Region. These same ports must also be open…

Submitted by devops_kid· Mar 6, 2026Secure Network Connections

Question

A company wants to use thin clients running virtual desktops to replace 500 desktop computers used by its call center employees. The company is evaluating Amazon WorkSpaces as a solution. A network engineer who is testing with a thin client is unable to connect to Amazon WorkSpaces. After entering credentials, the network engineer receives the following error:

"An error occurred while launching your WorkSpace. Please try again." What should the network engineer do to resolve this issue?

Options

  • AUpdate the inbound rules on the network ACL on the subnets used for Amazon WorkSpaces to
  • BUpdate the company's corporate firewall to allow outbound access to UDP on port 4172 and TCP
  • CUpdate the inbound rules on the security group assigned to Amazon WorkSpaces to allow UDP
  • DUpdate the company's corporate firewall to allow inbound access to UDP on port 4172 and TCP

How the community answered

(15 responses)
  • A
    7% (1)
  • B
    67% (10)
  • C
    7% (1)
  • D
    20% (3)

Explanation

To connect to your WorkSpaces, the network that your Amazon WorkSpaces clients are connected to must have certain ports open to the IP address ranges for the various AWS services (grouped in subsets). These address ranges vary by AWS Region. These same ports must also be open on any firewall running on the client. For more information about the AWS IP address ranges for different Regions, see AWS IP Address Ranges in the Amazon Web Services General https://docs.aws.amazon.com/workspaces/latest/adminguide/workspaces-port- requirements.html#client-application-ports

Topics

#Amazon WorkSpaces#WorkSpaces connectivity#Firewall rules#Network troubleshooting

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