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ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

Your company hosts several Amazon EC2 Linux bastion hosts in a private subnet. Operations engineers must connect from the on-premises corporate network to administer these instances. To comply with the principle of least privilege, you need to add a single inbound rule to the bastion hosts' security group that enables this management access while exposing the minimum necessary attack surface. Which rule meets the requirement?

  • Allow inbound TCP traffic on port 3389 from the corporate network's public IP range

  • Allow inbound TCP traffic on port 23 from any IPv4 address (0.0.0.0/0)

  • Allow inbound UDP traffic on port 22 from any IPv4 address (0.0.0.0/0)

  • Allow inbound TCP traffic on port 22 from the corporate network's public IP range

ISC2 Systems Security Certified Practitioner (SSCP)
Network and Communication Security
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