1Z0-997-26 Security Practice Question
An administrator needs to implement secure, administrative access to private OCI compute instances without exposing them to the public internet. Which TWO methods can be utilized?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Deploy an OCI Bastion service configured for the target private subnet, allowing managed, timed SSH sessions.
Secure private access can be achieved via OCI Bastion service (which provides managed SSH/SFTP access) or through a site-to-site VPN / FastConnect hybrid connection combined with private subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure a public load balancer pointing directly to port 22 of all backend private compute instances.
Why it's wrong here
Public load balancers do not support native TCP forwarding for SSH management in the manner required for bastion-style access.
- ✗
Attach ephemeral public IP addresses to every target instance and restrict access using strict security lists.
Why it's wrong here
Using public IPs exposes instances to the internet, which violates the requirement of keeping instances private and unexposed.
- ✗
Create an API Gateway with an unauthenticated public endpoint linked to the internal compute instances.
Why it's wrong here
API Gateways handle HTTP/HTTPS REST APIs, not raw server administration protocols like SSH.
- ✓
Deploy an OCI Bastion service configured for the target private subnet, allowing managed, timed SSH sessions.
Why this is correct
OCI Bastion provides secure, restricted, and audited access to private instances without requiring public IPs or running custom bastion hosts.
- ✓
Establish an OCI Site-to-Site VPN or FastConnect circuit from the on-premises datacenter to the VCN, enabling direct administrative access.
Why this is correct
Hybrid networking via VPN or FastConnect allows secure administration from an on-premises network without exposing instances to the public internet.
Visual reference
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Oracle exam blueprint
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