Why can't I reach my Amazon EC2 instance via its Elastic IP address?

The server works fine via the Amazon assigned DNS entry, but I cannot reach it (using a browser) via the Elastic IP address Amazon assigned the box. Ping does not work either. I am trying to confirm it is reachable before I add the IP address to my own DNS entries.

Things to check:

• Your elastic IP associated with your instance?
• Your security group of instance permits incoming connections?
• Your instance firewall permits incoming connections?
• Your application listens?

As others mentioned, the security group for your EC2 instance may not allow the HTTP port.

First,find the Security Group your instance is using.

Then, under Network & Security, go to the Security Groups section. Select your instance's security group and add an Inbound Custom TCP rule for Port range 80.

Also make sure Route table of VPC is set to enable IP address outside the VPC (0.0.0.0/0) to flow from the subnet to the Internet gateway.

Navigate to VPC > Route Tables ; Route tab. Check Destination is 'mapped' to Target Internet Gateway Id (apart from local).