Access a Windows EC2 Machine Through Windows Firewall
Use this article when a local machine needs to reach a Windows EC2 instance that has Windows Firewall enabled.
Validation workflow
- Confirm the EC2 security group allows the required port from the local source IP.
- Confirm Windows Firewall allows the same service inside the instance.
- Test connectivity with the approved access method and then narrow any temporary rule changes.
Last updated: September 25, 2026