CODEWITHSUNDEEP
amazon-web-servicesamazon-ec2amazon-elastic-beanstalk
hbquikcomjamesl
hbquikcomjamesl

Reputation: 111

IP address range for outbound requests from AWS EC2 in a load-balanced Elastic Beanstalk

Suppose we have an application running on an EC2 instance in a load-balanced Elastic Beanstalk stack. And this application wants to (1) call web services served by external hosts, and/or (2) open secured TN5250 (i.e, 5250 data stream over SSL-secured Telnet) sessions on external hosts.

Is there a way we can give those external hosts a reliable IP address range from which to expect our traffic?

(Cross-posted to the AWS EC2 developer forum.)

Upvotes: 1

Views: 1717

Answers (1)

John Rotenstein
John Rotenstein

Reputation: 269131

If the Amazon EC2 instances are in a private subnet, then you will need a NAT Gateway in a public subnet to provide them with Internet access. An Elastic IP address is associated with the NAT Gateway, which remains static and can be used for whitelisting. All outbound traffic from the instances will come from the NAT Gateway's IP address.

If the Amazon EC2 instances are in a public subnet and require a static IP address, they will each require their own Elastic IP address. Please note that there are limits on the number of Elastic IP addresses in your account.

Upvotes: 2

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