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Hi there,
Thank you for reaching out.
I can see that you are not able to access your instance.
Can you verify that the instance meets all prerequisites
The instance must meet the following conditions:
- The route table that is associated with your instance’s subnet has a default route to an Internet Gateway (0.0.0./0).
- The internet gateway that is associated with the route isn't deleted.
- The security group that is attached to the instance’s elastic network interface has rules allowing outbound internet traffic (0.0.0.0/0) for your ports and protocols.
- The network access control list (network ACL) that is associated with the instance's subnet has rules allowing both outbound and inbound traffic to the internet.
- Verify that the instance has a public IP address.
Please review the provided AWS documentation[1][2] for more information.
I hope the provided information helps. If it does not, please let me know if you have questions.
Have a great day!
References
[1] https://aws.amazon.com/premiumsupport/knowledge-center/ec2-connect-internet-gateway/
[2] https://aws.amazon.com/premiumsupport/knowledge-center/ec2-internet-connectivity/
Thank you for your response. IIUC, all of the configurations you mentioned are already correctly set up. For some more context, I am trying to switch to a different ISP. The IP address from my old ISP and my new ISP are both in the inbound rules of my EC2's security group. However, I can only connect to the EC2 using the old IP address. I wonder if there is something else that I am missing, or if I should contact my ISP. Any additional help would be great, thanks.
Never mind, turns out my new ISP does not give me a static IP address. I had to change it to the right one. Thanks.
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